28753480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{997}}^1$

素因数の和:1118

約数の個数: 64

約数和(自身を含む): 74730240

約数和(自身を除く): 45976760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 412, 515, 721, 824, 997, 1030, 1442, 1994, 2060, 2884, 3605, 3988, 4120, 4985, 5768, 6979, 7210, 7976, 9970, 13958, 14420, 19940, 27916, 28840, 34895, 39880, 55832, 69790, 102691, 139580, 205382, 279160, 410764, 513455, 718837, 821528, 1026910, 1437674, 2053820, 2875348, 3594185, 4107640, 5750696, 7188370, 14376740, 28753480]

約数ペア:

[(1, 28753480), (2, 14376740), (4, 7188370), (5, 5750696), (7, 4107640), (8, 3594185), (10, 2875348), (14, 2053820), (20, 1437674), (28, 1026910), (35, 821528), (40, 718837), (56, 513455), (70, 410764), (103, 279160), (140, 205382), (206, 139580), (280, 102691), (412, 69790), (515, 55832), (721, 39880), (824, 34895), (997, 28840), (1030, 27916), (1442, 19940), (1994, 14420), (2060, 13958), (2884, 9970), (3605, 7976), (3988, 7210), (4120, 6979), (4985, 5768)]