72102920

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{8543}}^1$

素因数の和:8765

約数の個数: 32

約数和(自身を含む): 163019520

約数和(自身を除く): 90916600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 8543, 17086, 34172, 42715, 68344, 85430, 170860, 341720, 1802573, 3605146, 7210292, 9012865, 14420584, 18025730, 36051460, 72102920]

約数ペア:

[(1, 72102920), (2, 36051460), (4, 18025730), (5, 14420584), (8, 9012865), (10, 7210292), (20, 3605146), (40, 1802573), (211, 341720), (422, 170860), (844, 85430), (1055, 68344), (1688, 42715), (2110, 34172), (4220, 17086), (8440, 8543)]