180000440

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{54217}}^1$

素因数の和:54311

約数の個数: 32

約数和(自身を含む): 409888080

約数和(自身を除く): 229887640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 54217, 108434, 216868, 271085, 433736, 542170, 1084340, 2168680, 4500011, 9000022, 18000044, 22500055, 36000088, 45000110, 90000220, 180000440]

約数ペア:

[(1, 180000440), (2, 90000220), (4, 45000110), (5, 36000088), (8, 22500055), (10, 18000044), (20, 9000022), (40, 4500011), (83, 2168680), (166, 1084340), (332, 542170), (415, 433736), (664, 271085), (830, 216868), (1660, 108434), (3320, 54217)]