1780454990

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{20807}}^1$

素因数の和:21056

約数の個数: 32

約数和(自身を含む): 3295987200

約数和(自身を除く): 1515532210

約数列:

[1, 2, 5, 10, 43, 86, 199, 215, 398, 430, 995, 1990, 8557, 17114, 20807, 41614, 42785, 85570, 104035, 208070, 894701, 1789402, 4140593, 4473505, 8281186, 8947010, 20702965, 41405930, 178045499, 356090998, 890227495, 1780454990]

約数ペア:

[(1, 1780454990), (2, 890227495), (5, 356090998), (10, 178045499), (43, 41405930), (86, 20702965), (199, 8947010), (215, 8281186), (398, 4473505), (430, 4140593), (995, 1789402), (1990, 894701), (8557, 208070), (17114, 104035), (20807, 85570), (41614, 42785)]