20951490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:184

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 41256510

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 59, 70, 89, 95, 105, 114, 118, 133, 177, 178, 190, 210, 266, 267, 285, 295, 354, 399, 413, 445, 534, 570, 590, 623, 665, 798, 826, 885, 890, 1121, 1239, 1246, 1330, 1335, 1691, 1770, 1869, 1995, 2065, 2242, 2478, 2670, 3115, 3363, 3382, 3738, 3990, 4130, 5073, 5251, 5605, 6195, 6230, 6726, 7847, 8455, 9345, 10146, 10502, 11210, 11837, 12390, 15694, 15753, 16815, 16910, 18690, 23541, 23674, 25365, 26255, 31506, 33630, 35511, 36757, 39235, 47082, 50730, 52510, 59185, 71022, 73514, 78470, 78765, 99769, 110271, 117705, 118370, 157530, 177555, 183785, 199538, 220542, 235410, 299307, 355110, 367570, 498845, 551355, 598614, 698383, 997690, 1102710, 1396766, 1496535, 2095149, 2993070, 3491915, 4190298, 6983830, 10475745, 20951490]

約数ペア:

[(1, 20951490), (2, 10475745), (3, 6983830), (5, 4190298), (6, 3491915), (7, 2993070), (10, 2095149), (14, 1496535), (15, 1396766), (19, 1102710), (21, 997690), (30, 698383), (35, 598614), (38, 551355), (42, 498845), (57, 367570), (59, 355110), (70, 299307), (89, 235410), (95, 220542), (105, 199538), (114, 183785), (118, 177555), (133, 157530), (177, 118370), (178, 117705), (190, 110271), (210, 99769), (266, 78765), (267, 78470), (285, 73514), (295, 71022), (354, 59185), (399, 52510), (413, 50730), (445, 47082), (534, 39235), (570, 36757), (590, 35511), (623, 33630), (665, 31506), (798, 26255), (826, 25365), (885, 23674), (890, 23541), (1121, 18690), (1239, 16910), (1246, 16815), (1330, 15753), (1335, 15694), (1691, 12390), (1770, 11837), (1869, 11210), (1995, 10502), (2065, 10146), (2242, 9345), (2478, 8455), (2670, 7847), (3115, 6726), (3363, 6230), (3382, 6195), (3738, 5605), (3990, 5251), (4130, 5073)]