81317416

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{761}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 165483540

約数和(自身を除く): 84166124

約数列:

[1, 2, 4, 8, 19, 37, 38, 74, 76, 148, 152, 296, 361, 703, 722, 761, 1406, 1444, 1522, 2812, 2888, 3044, 5624, 6088, 13357, 14459, 26714, 28157, 28918, 53428, 56314, 57836, 106856, 112628, 115672, 225256, 274721, 534983, 549442, 1069966, 1098884, 2139932, 2197768, 4279864, 10164677, 20329354, 40658708, 81317416]

約数ペア:

[(1, 81317416), (2, 40658708), (4, 20329354), (8, 10164677), (19, 4279864), (37, 2197768), (38, 2139932), (74, 1098884), (76, 1069966), (148, 549442), (152, 534983), (296, 274721), (361, 225256), (703, 115672), (722, 112628), (761, 106856), (1406, 57836), (1444, 56314), (1522, 53428), (2812, 28918), (2888, 28157), (3044, 26714), (5624, 14459), (6088, 13357)]