20393840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13417}}^1$

素因数の和:13449

約数の個数: 40

約数和(自身を含む): 49914960

約数和(自身を除く): 29521120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13417, 26834, 53668, 67085, 107336, 134170, 214672, 254923, 268340, 509846, 536680, 1019692, 1073360, 1274615, 2039384, 2549230, 4078768, 5098460, 10196920, 20393840]

約数ペア:

[(1, 20393840), (2, 10196920), (4, 5098460), (5, 4078768), (8, 2549230), (10, 2039384), (16, 1274615), (19, 1073360), (20, 1019692), (38, 536680), (40, 509846), (76, 268340), (80, 254923), (95, 214672), (152, 134170), (190, 107336), (304, 67085), (380, 53668), (760, 26834), (1520, 13417)]