21473840

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1483}}^1$

素因数の和:1677

約数の個数: 40

約数和(自身を含む): 50236368

約数和(自身を除く): 28762528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1483, 1810, 2896, 2966, 3620, 5932, 7240, 7415, 11864, 14480, 14830, 23728, 29660, 59320, 118640, 268423, 536846, 1073692, 1342115, 2147384, 2684230, 4294768, 5368460, 10736920, 21473840]

約数ペア:

[(1, 21473840), (2, 10736920), (4, 5368460), (5, 4294768), (8, 2684230), (10, 2147384), (16, 1342115), (20, 1073692), (40, 536846), (80, 268423), (181, 118640), (362, 59320), (724, 29660), (905, 23728), (1448, 14830), (1483, 14480), (1810, 11864), (2896, 7415), (2966, 7240), (3620, 5932)]