77978980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{631}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 169456896

約数和(自身を除く): 91477916

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 167, 185, 334, 370, 631, 668, 740, 835, 1262, 1670, 2524, 3155, 3340, 6179, 6310, 12358, 12620, 23347, 24716, 30895, 46694, 61790, 93388, 105377, 116735, 123580, 210754, 233470, 421508, 466940, 526885, 1053770, 2107540, 3898949, 7797898, 15595796, 19494745, 38989490, 77978980]

約数ペア:

[(1, 77978980), (2, 38989490), (4, 19494745), (5, 15595796), (10, 7797898), (20, 3898949), (37, 2107540), (74, 1053770), (148, 526885), (167, 466940), (185, 421508), (334, 233470), (370, 210754), (631, 123580), (668, 116735), (740, 105377), (835, 93388), (1262, 61790), (1670, 46694), (2524, 30895), (3155, 24716), (3340, 23347), (6179, 12620), (6310, 12358)]