664874020

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{229}}^1\times {\mathrm{811}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 1411905600

約数和(自身を除く): 747031580

約数列:

[1, 2, 4, 5, 10, 20, 179, 229, 358, 458, 716, 811, 895, 916, 1145, 1622, 1790, 2290, 3244, 3580, 4055, 4580, 8110, 16220, 40991, 81982, 145169, 163964, 185719, 204955, 290338, 371438, 409910, 580676, 725845, 742876, 819820, 928595, 1451690, 1857190, 2903380, 3714380, 33243701, 66487402, 132974804, 166218505, 332437010, 664874020]

約数ペア:

[(1, 664874020), (2, 332437010), (4, 166218505), (5, 132974804), (10, 66487402), (20, 33243701), (179, 3714380), (229, 2903380), (358, 1857190), (458, 1451690), (716, 928595), (811, 819820), (895, 742876), (916, 725845), (1145, 580676), (1622, 409910), (1790, 371438), (2290, 290338), (3244, 204955), (3580, 185719), (4055, 163964), (4580, 145169), (8110, 81982), (16220, 40991)]