16340680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 38591280

約数和(自身を除く): 22250600

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 181, 185, 244, 296, 305, 362, 370, 488, 610, 724, 740, 905, 1220, 1448, 1480, 1810, 2257, 2440, 3620, 4514, 6697, 7240, 9028, 11041, 11285, 13394, 18056, 22082, 22570, 26788, 33485, 44164, 45140, 53576, 55205, 66970, 88328, 90280, 110410, 133940, 220820, 267880, 408517, 441640, 817034, 1634068, 2042585, 3268136, 4085170, 8170340, 16340680]

約数ペア:

[(1, 16340680), (2, 8170340), (4, 4085170), (5, 3268136), (8, 2042585), (10, 1634068), (20, 817034), (37, 441640), (40, 408517), (61, 267880), (74, 220820), (122, 133940), (148, 110410), (181, 90280), (185, 88328), (244, 66970), (296, 55205), (305, 53576), (362, 45140), (370, 44164), (488, 33485), (610, 26788), (724, 22570), (740, 22082), (905, 18056), (1220, 13394), (1448, 11285), (1480, 11041), (1810, 9028), (2257, 7240), (2440, 6697), (3620, 4514)]