42800780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{757}}^1$

素因数の和:1034

約数の個数: 48

約数和(自身を含む): 98564256

約数和(自身を除く): 55763476

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 514, 757, 1028, 1285, 1514, 2570, 2827, 3028, 3785, 5140, 5654, 7570, 8327, 11308, 14135, 15140, 16654, 28270, 33308, 41635, 56540, 83270, 166540, 194549, 389098, 778196, 972745, 1945490, 2140039, 3890980, 4280078, 8560156, 10700195, 21400390, 42800780]

約数ペア:

[(1, 42800780), (2, 21400390), (4, 10700195), (5, 8560156), (10, 4280078), (11, 3890980), (20, 2140039), (22, 1945490), (44, 972745), (55, 778196), (110, 389098), (220, 194549), (257, 166540), (514, 83270), (757, 56540), (1028, 41635), (1285, 33308), (1514, 28270), (2570, 16654), (2827, 15140), (3028, 14135), (3785, 11308), (5140, 8327), (5654, 7570)]