391521520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{376463}}^1$

素因数の和:376489

約数の個数: 40

約数和(自身を含む): 980312256

約数和(自身を除く): 588790736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 376463, 752926, 1505852, 1882315, 3011704, 3764630, 4894019, 6023408, 7529260, 9788038, 15058520, 19576076, 24470095, 30117040, 39152152, 48940190, 78304304, 97880380, 195760760, 391521520]

約数ペア:

[(1, 391521520), (2, 195760760), (4, 97880380), (5, 78304304), (8, 48940190), (10, 39152152), (13, 30117040), (16, 24470095), (20, 19576076), (26, 15058520), (40, 9788038), (52, 7529260), (65, 6023408), (80, 4894019), (104, 3764630), (130, 3011704), (208, 1882315), (260, 1505852), (520, 752926), (1040, 376463)]