140398820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{733}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 301991088

約数和(自身を除く): 161592268

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 157, 244, 305, 314, 610, 628, 733, 785, 1220, 1466, 1570, 2932, 3140, 3665, 7330, 9577, 14660, 19154, 38308, 44713, 47885, 89426, 95770, 115081, 178852, 191540, 223565, 230162, 447130, 460324, 575405, 894260, 1150810, 2301620, 7019941, 14039882, 28079764, 35099705, 70199410, 140398820]

約数ペア:

[(1, 140398820), (2, 70199410), (4, 35099705), (5, 28079764), (10, 14039882), (20, 7019941), (61, 2301620), (122, 1150810), (157, 894260), (244, 575405), (305, 460324), (314, 447130), (610, 230162), (628, 223565), (733, 191540), (785, 178852), (1220, 115081), (1466, 95770), (1570, 89426), (2932, 47885), (3140, 44713), (3665, 38308), (7330, 19154), (9577, 14660)]