18447220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1181}}^1$

素因数の和:1272

約数の個数: 48

約数和(自身を含む): 42892416

約数和(自身を除く): 24445196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1181, 1420, 1562, 2362, 3124, 3905, 4724, 5905, 7810, 11810, 12991, 15620, 23620, 25982, 51964, 64955, 83851, 129910, 167702, 259820, 335404, 419255, 838510, 922361, 1677020, 1844722, 3689444, 4611805, 9223610, 18447220]

約数ペア:

[(1, 18447220), (2, 9223610), (4, 4611805), (5, 3689444), (10, 1844722), (11, 1677020), (20, 922361), (22, 838510), (44, 419255), (55, 335404), (71, 259820), (110, 167702), (142, 129910), (220, 83851), (284, 64955), (355, 51964), (710, 25982), (781, 23620), (1181, 15620), (1420, 12991), (1562, 11810), (2362, 7810), (3124, 5905), (3905, 4724)]