18886288

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:431

約数の個数: 40

約数和(自身を含む): 37962848

約数和(自身を除く): 19076560

約数列:

[1, 2, 4, 8, 16, 43, 86, 97, 172, 194, 283, 344, 388, 566, 688, 776, 1132, 1552, 2264, 4171, 4528, 8342, 12169, 16684, 24338, 27451, 33368, 48676, 54902, 66736, 97352, 109804, 194704, 219608, 439216, 1180393, 2360786, 4721572, 9443144, 18886288]

約数ペア:

[(1, 18886288), (2, 9443144), (4, 4721572), (8, 2360786), (16, 1180393), (43, 439216), (86, 219608), (97, 194704), (172, 109804), (194, 97352), (283, 66736), (344, 54902), (388, 48676), (566, 33368), (688, 27451), (776, 24338), (1132, 16684), (1552, 12169), (2264, 8342), (4171, 4528)]