19619920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10663}}^1$

素因数の和:10699

約数の個数: 40

約数和(自身を含む): 47604096

約数和(自身を除く): 27984176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10663, 21326, 42652, 53315, 85304, 106630, 170608, 213260, 245249, 426520, 490498, 853040, 980996, 1226245, 1961992, 2452490, 3923984, 4904980, 9809960, 19619920]

約数ペア:

[(1, 19619920), (2, 9809960), (4, 4904980), (5, 3923984), (8, 2452490), (10, 1961992), (16, 1226245), (20, 980996), (23, 853040), (40, 490498), (46, 426520), (80, 245249), (92, 213260), (115, 170608), (184, 106630), (230, 85304), (368, 53315), (460, 42652), (920, 21326), (1840, 10663)]