816802020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{991}}^1$

素因数の和:1266

約数の個数: 144

約数和(自身を含む): 2621498880

約数和(自身を除く): 1804696860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 241, 285, 342, 380, 482, 570, 684, 723, 855, 964, 991, 1140, 1205, 1446, 1710, 1982, 2169, 2410, 2892, 2973, 3420, 3615, 3964, 4338, 4579, 4820, 4955, 5946, 7230, 8676, 8919, 9158, 9910, 10845, 11892, 13737, 14460, 14865, 17838, 18316, 18829, 19820, 21690, 22895, 27474, 29730, 35676, 37658, 41211, 43380, 44595, 45790, 54948, 56487, 59460, 68685, 75316, 82422, 89190, 91580, 94145, 112974, 137370, 164844, 169461, 178380, 188290, 206055, 225948, 238831, 274740, 282435, 338922, 376580, 412110, 477662, 564870, 677844, 716493, 824220, 847305, 955324, 1129740, 1194155, 1432986, 1694610, 2149479, 2388310, 2865972, 3389220, 3582465, 4298958, 4537789, 4776620, 7164930, 8597916, 9075578, 10747395, 13613367, 14329860, 18151156, 21494790, 22688945, 27226734, 40840101, 42989580, 45377890, 54453468, 68066835, 81680202, 90755780, 136133670, 163360404, 204200505, 272267340, 408401010, 816802020]

約数ペア:

[(1, 816802020), (2, 408401010), (3, 272267340), (4, 204200505), (5, 163360404), (6, 136133670), (9, 90755780), (10, 81680202), (12, 68066835), (15, 54453468), (18, 45377890), (19, 42989580), (20, 40840101), (30, 27226734), (36, 22688945), (38, 21494790), (45, 18151156), (57, 14329860), (60, 13613367), (76, 10747395), (90, 9075578), (95, 8597916), (114, 7164930), (171, 4776620), (180, 4537789), (190, 4298958), (228, 3582465), (241, 3389220), (285, 2865972), (342, 2388310), (380, 2149479), (482, 1694610), (570, 1432986), (684, 1194155), (723, 1129740), (855, 955324), (964, 847305), (991, 824220), (1140, 716493), (1205, 677844), (1446, 564870), (1710, 477662), (1982, 412110), (2169, 376580), (2410, 338922), (2892, 282435), (2973, 274740), (3420, 238831), (3615, 225948), (3964, 206055), (4338, 188290), (4579, 178380), (4820, 169461), (4955, 164844), (5946, 137370), (7230, 112974), (8676, 94145), (8919, 91580), (9158, 89190), (9910, 82422), (10845, 75316), (11892, 68685), (13737, 59460), (14460, 56487), (14865, 54948), (17838, 45790), (18316, 44595), (18829, 43380), (19820, 41211), (21690, 37658), (22895, 35676), (27474, 29730)]