18430660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{739}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 41025600

約数和(自身を除く): 22594940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 739, 860, 1247, 1478, 2494, 2956, 3695, 4988, 6235, 7390, 12470, 14780, 21431, 24940, 31777, 42862, 63554, 85724, 107155, 127108, 158885, 214310, 317770, 428620, 635540, 921533, 1843066, 3686132, 4607665, 9215330, 18430660]

約数ペア:

[(1, 18430660), (2, 9215330), (4, 4607665), (5, 3686132), (10, 1843066), (20, 921533), (29, 635540), (43, 428620), (58, 317770), (86, 214310), (116, 158885), (145, 127108), (172, 107155), (215, 85724), (290, 63554), (430, 42862), (580, 31777), (739, 24940), (860, 21431), (1247, 14780), (1478, 12470), (2494, 7390), (2956, 6235), (3695, 4988)]