20164498480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{161471}}^1$

素因数の和:161714

約数の個数: 80

約数和(自身を含む): 53820555264

約数和(自身を除く): 33656056784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 223, 280, 446, 560, 892, 1115, 1561, 1784, 2230, 3122, 3568, 4460, 6244, 7805, 8920, 12488, 15610, 17840, 24976, 31220, 62440, 124880, 161471, 322942, 645884, 807355, 1130297, 1291768, 1614710, 2260594, 2583536, 3229420, 4521188, 5651485, 6458840, 9042376, 11302970, 12917680, 18084752, 22605940, 36008033, 45211880, 72016066, 90423760, 144032132, 180040165, 252056231, 288064264, 360080330, 504112462, 576128528, 720160660, 1008224924, 1260281155, 1440321320, 2016449848, 2520562310, 2880642640, 4032899696, 5041124620, 10082249240, 20164498480]

約数ペア:

[(1, 20164498480), (2, 10082249240), (4, 5041124620), (5, 4032899696), (7, 2880642640), (8, 2520562310), (10, 2016449848), (14, 1440321320), (16, 1260281155), (20, 1008224924), (28, 720160660), (35, 576128528), (40, 504112462), (56, 360080330), (70, 288064264), (80, 252056231), (112, 180040165), (140, 144032132), (223, 90423760), (280, 72016066), (446, 45211880), (560, 36008033), (892, 22605940), (1115, 18084752), (1561, 12917680), (1784, 11302970), (2230, 9042376), (3122, 6458840), (3568, 5651485), (4460, 4521188), (6244, 3229420), (7805, 2583536), (8920, 2260594), (12488, 1614710), (15610, 1291768), (17840, 1130297), (24976, 807355), (31220, 645884), (62440, 322942), (124880, 161471)]