157157960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{2221}}^1$

素因数の和:2322

約数の個数: 64

約数和(自身を含む): 371962800

約数和(自身を除く): 214804840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 61, 116, 122, 145, 232, 244, 290, 305, 488, 580, 610, 1160, 1220, 1769, 2221, 2440, 3538, 4442, 7076, 8845, 8884, 11105, 14152, 17690, 17768, 22210, 35380, 44420, 64409, 70760, 88840, 128818, 135481, 257636, 270962, 322045, 515272, 541924, 644090, 677405, 1083848, 1288180, 1354810, 2576360, 2709620, 3928949, 5419240, 7857898, 15715796, 19644745, 31431592, 39289490, 78578980, 157157960]

約数ペア:

[(1, 157157960), (2, 78578980), (4, 39289490), (5, 31431592), (8, 19644745), (10, 15715796), (20, 7857898), (29, 5419240), (40, 3928949), (58, 2709620), (61, 2576360), (116, 1354810), (122, 1288180), (145, 1083848), (232, 677405), (244, 644090), (290, 541924), (305, 515272), (488, 322045), (580, 270962), (610, 257636), (1160, 135481), (1220, 128818), (1769, 88840), (2221, 70760), (2440, 64409), (3538, 44420), (4442, 35380), (7076, 22210), (8845, 17768), (8884, 17690), (11105, 14152)]