678996969

素因数分解:

$3^1\times 7^3\times {\mathrm{431}}^1\times {\mathrm{1531}}^1$

素因数の和:1986

約数の個数: 32

約数和(自身を含む): 1058918400

約数和(自身を除く): 379921431

約数列:

[1, 3, 7, 21, 49, 147, 343, 431, 1029, 1293, 1531, 3017, 4593, 9051, 10717, 21119, 32151, 63357, 75019, 147833, 225057, 443499, 525133, 659861, 1575399, 1979583, 4619027, 13857081, 32333189, 96999567, 226332323, 678996969]

約数ペア:

[(1, 678996969), (3, 226332323), (7, 96999567), (21, 32333189), (49, 13857081), (147, 4619027), (343, 1979583), (431, 1575399), (1029, 659861), (1293, 525133), (1531, 443499), (3017, 225057), (4593, 147833), (9051, 75019), (10717, 63357), (21119, 32151)]