644891968

素因数分解:

$2^6\times 7^1\times {\mathrm{571}}^1\times {\mathrm{2521}}^1$

素因数の和:3111

約数の個数: 56

約数和(自身を含む): 1465665344

約数和(自身を除く): 820773376

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448, 571, 1142, 2284, 2521, 3997, 4568, 5042, 7994, 9136, 10084, 15988, 17647, 18272, 20168, 31976, 35294, 36544, 40336, 63952, 70588, 80672, 127904, 141176, 161344, 255808, 282352, 564704, 1129408, 1439491, 2878982, 5757964, 10076437, 11515928, 20152874, 23031856, 40305748, 46063712, 80611496, 92127424, 161222992, 322445984, 644891968]

約数ペア:

[(1, 644891968), (2, 322445984), (4, 161222992), (7, 92127424), (8, 80611496), (14, 46063712), (16, 40305748), (28, 23031856), (32, 20152874), (56, 11515928), (64, 10076437), (112, 5757964), (224, 2878982), (448, 1439491), (571, 1129408), (1142, 564704), (2284, 282352), (2521, 255808), (3997, 161344), (4568, 141176), (5042, 127904), (7994, 80672), (9136, 70588), (10084, 63952), (15988, 40336), (17647, 36544), (18272, 35294), (20168, 31976)]