20823920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20023}}^1$

素因数の和:20049

約数の個数: 40

約数和(自身を含む): 52142496

約数和(自身を除く): 31318576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20023, 40046, 80092, 100115, 160184, 200230, 260299, 320368, 400460, 520598, 800920, 1041196, 1301495, 1601840, 2082392, 2602990, 4164784, 5205980, 10411960, 20823920]

約数ペア:

[(1, 20823920), (2, 10411960), (4, 5205980), (5, 4164784), (8, 2602990), (10, 2082392), (13, 1601840), (16, 1301495), (20, 1041196), (26, 800920), (40, 520598), (52, 400460), (65, 320368), (80, 260299), (104, 200230), (130, 160184), (208, 100115), (260, 80092), (520, 40046), (1040, 20023)]