18813840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{283}}^1$

素因数の和:576

約数の個数: 80

約数和(自身を含む): 58740288

約数和(自身を除く): 39926448

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 277, 283, 554, 566, 831, 849, 1108, 1132, 1385, 1415, 1662, 1698, 2216, 2264, 2770, 2830, 3324, 3396, 4155, 4245, 4432, 4528, 5540, 5660, 6648, 6792, 8310, 8490, 11080, 11320, 13296, 13584, 16620, 16980, 22160, 22640, 33240, 33960, 66480, 67920, 78391, 156782, 235173, 313564, 391955, 470346, 627128, 783910, 940692, 1175865, 1254256, 1567820, 1881384, 2351730, 3135640, 3762768, 4703460, 6271280, 9406920, 18813840]

約数ペア:

[(1, 18813840), (2, 9406920), (3, 6271280), (4, 4703460), (5, 3762768), (6, 3135640), (8, 2351730), (10, 1881384), (12, 1567820), (15, 1254256), (16, 1175865), (20, 940692), (24, 783910), (30, 627128), (40, 470346), (48, 391955), (60, 313564), (80, 235173), (120, 156782), (240, 78391), (277, 67920), (283, 66480), (554, 33960), (566, 33240), (831, 22640), (849, 22160), (1108, 16980), (1132, 16620), (1385, 13584), (1415, 13296), (1662, 11320), (1698, 11080), (2216, 8490), (2264, 8310), (2770, 6792), (2830, 6648), (3324, 5660), (3396, 5540), (4155, 4528), (4245, 4432)]