18641920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1$

素因数の和:367

約数の個数: 88

約数和(自身を含む): 48931488

約数和(自身を除く): 30289568

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 331, 352, 440, 512, 640, 662, 704, 880, 1024, 1280, 1324, 1408, 1655, 1760, 2560, 2648, 2816, 3310, 3520, 3641, 5120, 5296, 5632, 6620, 7040, 7282, 10592, 11264, 13240, 14080, 14564, 18205, 21184, 26480, 28160, 29128, 36410, 42368, 52960, 56320, 58256, 72820, 84736, 105920, 116512, 145640, 169472, 211840, 233024, 291280, 338944, 423680, 466048, 582560, 847360, 932096, 1165120, 1694720, 1864192, 2330240, 3728384, 4660480, 9320960, 18641920]

約数ペア:

[(1, 18641920), (2, 9320960), (4, 4660480), (5, 3728384), (8, 2330240), (10, 1864192), (11, 1694720), (16, 1165120), (20, 932096), (22, 847360), (32, 582560), (40, 466048), (44, 423680), (55, 338944), (64, 291280), (80, 233024), (88, 211840), (110, 169472), (128, 145640), (160, 116512), (176, 105920), (220, 84736), (256, 72820), (320, 58256), (331, 56320), (352, 52960), (440, 42368), (512, 36410), (640, 29128), (662, 28160), (704, 26480), (880, 21184), (1024, 18205), (1280, 14564), (1324, 14080), (1408, 13240), (1655, 11264), (1760, 10592), (2560, 7282), (2648, 7040), (2816, 6620), (3310, 5632), (3520, 5296), (3641, 5120)]