87655780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71849}}^1$

素因数の和:71919

約数の個数: 24

約数和(自身を含む): 187097400

約数和(自身を除く): 99441620

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 71849, 143698, 287396, 359245, 718490, 1436980, 4382789, 8765578, 17531156, 21913945, 43827890, 87655780]

約数ペア:

[(1, 87655780), (2, 43827890), (4, 21913945), (5, 17531156), (10, 8765578), (20, 4382789), (61, 1436980), (122, 718490), (244, 359245), (305, 287396), (610, 143698), (1220, 71849)]