20178256840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{2351}}^1$

素因数の和:2556

約数の個数: 192

約数和(自身を含む): 55019865600

約数和(自身を除く): 34841608760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 151, 196, 203, 232, 245, 280, 290, 302, 392, 406, 490, 580, 604, 755, 812, 980, 1015, 1057, 1160, 1208, 1421, 1510, 1624, 1960, 2030, 2114, 2351, 2842, 3020, 4060, 4228, 4379, 4702, 5285, 5684, 6040, 7105, 7399, 8120, 8456, 8758, 9404, 10570, 11368, 11755, 14210, 14798, 16457, 17516, 18808, 21140, 21895, 23510, 28420, 29596, 30653, 32914, 35032, 36995, 42280, 43790, 47020, 56840, 59192, 61306, 65828, 68179, 73990, 82285, 87580, 94040, 115199, 122612, 131656, 136358, 147980, 153265, 164570, 175160, 214571, 230398, 245224, 272716, 295960, 306530, 329140, 340895, 355001, 429142, 460796, 477253, 545432, 575995, 613060, 658280, 681790, 710002, 858284, 921592, 954506, 1072855, 1151990, 1226120, 1363580, 1420004, 1716568, 1775005, 1909012, 2145710, 2303980, 2386265, 2485007, 2727160, 2840008, 3340771, 3550010, 3818024, 4291420, 4607960, 4772530, 4970014, 6681542, 7100020, 8582840, 9545060, 9940028, 10295029, 12425035, 13363084, 14200040, 16703855, 17395049, 19090120, 19880056, 20590058, 24850070, 26726168, 33407710, 34790098, 41180116, 49700140, 51475145, 66815420, 69580196, 72065203, 82360232, 86975245, 99400280, 102950290, 133630840, 139160392, 144130406, 173950490, 205900580, 288260812, 347900980, 360326015, 411801160, 504456421, 576521624, 695801960, 720652030, 1008912842, 1441304060, 2017825684, 2522282105, 2882608120, 4035651368, 5044564210, 10089128420, 20178256840]

約数ペア:

[(1, 20178256840), (2, 10089128420), (4, 5044564210), (5, 4035651368), (7, 2882608120), (8, 2522282105), (10, 2017825684), (14, 1441304060), (20, 1008912842), (28, 720652030), (29, 695801960), (35, 576521624), (40, 504456421), (49, 411801160), (56, 360326015), (58, 347900980), (70, 288260812), (98, 205900580), (116, 173950490), (140, 144130406), (145, 139160392), (151, 133630840), (196, 102950290), (203, 99400280), (232, 86975245), (245, 82360232), (280, 72065203), (290, 69580196), (302, 66815420), (392, 51475145), (406, 49700140), (490, 41180116), (580, 34790098), (604, 33407710), (755, 26726168), (812, 24850070), (980, 20590058), (1015, 19880056), (1057, 19090120), (1160, 17395049), (1208, 16703855), (1421, 14200040), (1510, 13363084), (1624, 12425035), (1960, 10295029), (2030, 9940028), (2114, 9545060), (2351, 8582840), (2842, 7100020), (3020, 6681542), (4060, 4970014), (4228, 4772530), (4379, 4607960), (4702, 4291420), (5285, 3818024), (5684, 3550010), (6040, 3340771), (7105, 2840008), (7399, 2727160), (8120, 2485007), (8456, 2386265), (8758, 2303980), (9404, 2145710), (10570, 1909012), (11368, 1775005), (11755, 1716568), (14210, 1420004), (14798, 1363580), (16457, 1226120), (17516, 1151990), (18808, 1072855), (21140, 954506), (21895, 921592), (23510, 858284), (28420, 710002), (29596, 681790), (30653, 658280), (32914, 613060), (35032, 575995), (36995, 545432), (42280, 477253), (43790, 460796), (47020, 429142), (56840, 355001), (59192, 340895), (61306, 329140), (65828, 306530), (68179, 295960), (73990, 272716), (82285, 245224), (87580, 230398), (94040, 214571), (115199, 175160), (122612, 164570), (131656, 153265), (136358, 147980)]