20376880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14983}}^1$

素因数の和:15013

約数の個数: 40

約数和(自身を含む): 50166432

約数和(自身を除く): 29789552

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14983, 29966, 59932, 74915, 119864, 149830, 239728, 254711, 299660, 509422, 599320, 1018844, 1198640, 1273555, 2037688, 2547110, 4075376, 5094220, 10188440, 20376880]

約数ペア:

[(1, 20376880), (2, 10188440), (4, 5094220), (5, 4075376), (8, 2547110), (10, 2037688), (16, 1273555), (17, 1198640), (20, 1018844), (34, 599320), (40, 509422), (68, 299660), (80, 254711), (85, 239728), (136, 149830), (170, 119864), (272, 74915), (340, 59932), (680, 29966), (1360, 14983)]