20129560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4159}}^1$

素因数の和:4192

約数の個数: 48

約数和(自身を含む): 49795200

約数和(自身を除く): 29665640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4159, 4840, 8318, 16636, 20795, 33272, 41590, 45749, 83180, 91498, 166360, 182996, 228745, 365992, 457490, 503239, 914980, 1006478, 1829960, 2012956, 2516195, 4025912, 5032390, 10064780, 20129560]

約数ペア:

[(1, 20129560), (2, 10064780), (4, 5032390), (5, 4025912), (8, 2516195), (10, 2012956), (11, 1829960), (20, 1006478), (22, 914980), (40, 503239), (44, 457490), (55, 365992), (88, 228745), (110, 182996), (121, 166360), (220, 91498), (242, 83180), (440, 45749), (484, 41590), (605, 33272), (968, 20795), (1210, 16636), (2420, 8318), (4159, 4840)]