77708620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 181388592

約数和(自身を除く): 103679972

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 163, 197, 220, 242, 326, 394, 484, 605, 652, 788, 815, 985, 1210, 1630, 1793, 1970, 2167, 2420, 3260, 3586, 3940, 4334, 7172, 8668, 8965, 10835, 17930, 19723, 21670, 23837, 32111, 35860, 39446, 43340, 47674, 64222, 78892, 95348, 98615, 119185, 128444, 160555, 197230, 238370, 321110, 353221, 394460, 476740, 642220, 706442, 1412884, 1766105, 3532210, 3885431, 7064420, 7770862, 15541724, 19427155, 38854310, 77708620]

約数ペア:

[(1, 77708620), (2, 38854310), (4, 19427155), (5, 15541724), (10, 7770862), (11, 7064420), (20, 3885431), (22, 3532210), (44, 1766105), (55, 1412884), (110, 706442), (121, 642220), (163, 476740), (197, 394460), (220, 353221), (242, 321110), (326, 238370), (394, 197230), (484, 160555), (605, 128444), (652, 119185), (788, 98615), (815, 95348), (985, 78892), (1210, 64222), (1630, 47674), (1793, 43340), (1970, 39446), (2167, 35860), (2420, 32111), (3260, 23837), (3586, 21670), (3940, 19723), (4334, 17930), (7172, 10835), (8668, 8965)]