28608980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 62233920

約数和(自身を除く): 33624940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 139, 164, 205, 251, 278, 410, 502, 556, 695, 820, 1004, 1255, 1390, 2510, 2780, 5020, 5699, 10291, 11398, 20582, 22796, 28495, 34889, 41164, 51455, 56990, 69778, 102910, 113980, 139556, 174445, 205820, 348890, 697780, 1430449, 2860898, 5721796, 7152245, 14304490, 28608980]

約数ペア:

[(1, 28608980), (2, 14304490), (4, 7152245), (5, 5721796), (10, 2860898), (20, 1430449), (41, 697780), (82, 348890), (139, 205820), (164, 174445), (205, 139556), (251, 113980), (278, 102910), (410, 69778), (502, 56990), (556, 51455), (695, 41164), (820, 34889), (1004, 28495), (1255, 22796), (1390, 20582), (2510, 11398), (2780, 10291), (5020, 5699)]