31387720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8623}}^1$

素因数の和:8654

約数の個数: 64

約数和(自身を含む): 86929920

約数和(自身を除く): 55542200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 8623, 17246, 34492, 43115, 60361, 68984, 86230, 112099, 120722, 172460, 224198, 241444, 301805, 344920, 448396, 482888, 560495, 603610, 784693, 896792, 1120990, 1207220, 1569386, 2241980, 2414440, 3138772, 3923465, 4483960, 6277544, 7846930, 15693860, 31387720]

約数ペア:

[(1, 31387720), (2, 15693860), (4, 7846930), (5, 6277544), (7, 4483960), (8, 3923465), (10, 3138772), (13, 2414440), (14, 2241980), (20, 1569386), (26, 1207220), (28, 1120990), (35, 896792), (40, 784693), (52, 603610), (56, 560495), (65, 482888), (70, 448396), (91, 344920), (104, 301805), (130, 241444), (140, 224198), (182, 172460), (260, 120722), (280, 112099), (364, 86230), (455, 68984), (520, 60361), (728, 43115), (910, 34492), (1820, 17246), (3640, 8623)]