18751760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5717}}^1$

素因数の和:5771

約数の個数: 40

約数和(自身を含む): 44669016

約数和(自身を除く): 25917256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5717, 11434, 22868, 28585, 45736, 57170, 91472, 114340, 228680, 234397, 457360, 468794, 937588, 1171985, 1875176, 2343970, 3750352, 4687940, 9375880, 18751760]

約数ペア:

[(1, 18751760), (2, 9375880), (4, 4687940), (5, 3750352), (8, 2343970), (10, 1875176), (16, 1171985), (20, 937588), (40, 468794), (41, 457360), (80, 234397), (82, 228680), (164, 114340), (205, 91472), (328, 57170), (410, 45736), (656, 28585), (820, 22868), (1640, 11434), (3280, 5717)]