81040120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 214228800

約数和(自身を除く): 133188680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 173, 196, 239, 245, 280, 346, 392, 478, 490, 692, 865, 956, 980, 1195, 1211, 1384, 1673, 1730, 1912, 1960, 2390, 2422, 3346, 3460, 4780, 4844, 6055, 6692, 6920, 8365, 8477, 9560, 9688, 11711, 12110, 13384, 16730, 16954, 23422, 24220, 33460, 33908, 41347, 42385, 46844, 48440, 58555, 66920, 67816, 82694, 84770, 93688, 117110, 165388, 169540, 206735, 234220, 289429, 330776, 339080, 413470, 468440, 578858, 826940, 1157716, 1447145, 1653880, 2026003, 2315432, 2894290, 4052006, 5788580, 8104012, 10130015, 11577160, 16208024, 20260030, 40520060, 81040120]

約数ペア:

[(1, 81040120), (2, 40520060), (4, 20260030), (5, 16208024), (7, 11577160), (8, 10130015), (10, 8104012), (14, 5788580), (20, 4052006), (28, 2894290), (35, 2315432), (40, 2026003), (49, 1653880), (56, 1447145), (70, 1157716), (98, 826940), (140, 578858), (173, 468440), (196, 413470), (239, 339080), (245, 330776), (280, 289429), (346, 234220), (392, 206735), (478, 169540), (490, 165388), (692, 117110), (865, 93688), (956, 84770), (980, 82694), (1195, 67816), (1211, 66920), (1384, 58555), (1673, 48440), (1730, 46844), (1912, 42385), (1960, 41347), (2390, 33908), (2422, 33460), (3346, 24220), (3460, 23422), (4780, 16954), (4844, 16730), (6055, 13384), (6692, 12110), (6920, 11711), (8365, 9688), (8477, 9560)]