638043640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{29927}}^1$

素因数の和:29992

約数の個数: 64

約数和(自身を含む): 1583789760

約数和(自身を除く): 945746120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1066, 1640, 2132, 2665, 4264, 5330, 10660, 21320, 29927, 59854, 119708, 149635, 239416, 299270, 389051, 598540, 778102, 1197080, 1227007, 1556204, 1945255, 2454014, 3112408, 3890510, 4908028, 6135035, 7781020, 9816056, 12270070, 15562040, 15951091, 24540140, 31902182, 49080280, 63804364, 79755455, 127608728, 159510910, 319021820, 638043640]

約数ペア:

[(1, 638043640), (2, 319021820), (4, 159510910), (5, 127608728), (8, 79755455), (10, 63804364), (13, 49080280), (20, 31902182), (26, 24540140), (40, 15951091), (41, 15562040), (52, 12270070), (65, 9816056), (82, 7781020), (104, 6135035), (130, 4908028), (164, 3890510), (205, 3112408), (260, 2454014), (328, 1945255), (410, 1556204), (520, 1227007), (533, 1197080), (820, 778102), (1066, 598540), (1640, 389051), (2132, 299270), (2665, 239416), (4264, 149635), (5330, 119708), (10660, 59854), (21320, 29927)]