66931640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{27431}}^1$

素因数の和:27503

約数の個数: 32

約数和(自身を含む): 153070560

約数和(自身を除く): 86138920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 27431, 54862, 109724, 137155, 219448, 274310, 548620, 1097240, 1673291, 3346582, 6693164, 8366455, 13386328, 16732910, 33465820, 66931640]

約数ペア:

[(1, 66931640), (2, 33465820), (4, 16732910), (5, 13386328), (8, 8366455), (10, 6693164), (20, 3346582), (40, 1673291), (61, 1097240), (122, 548620), (244, 274310), (305, 219448), (488, 137155), (610, 109724), (1220, 54862), (2440, 27431)]