1980420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2539}}^1$

素因数の和:2564

約数の個数: 48

約数和(自身を含む): 5974080

約数和(自身を除く): 3993660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 2539, 5078, 7617, 10156, 12695, 15234, 25390, 30468, 33007, 38085, 50780, 66014, 76170, 99021, 132028, 152340, 165035, 198042, 330070, 396084, 495105, 660140, 990210, 1980420]

約数ペア:

[(1, 1980420), (2, 990210), (3, 660140), (4, 495105), (5, 396084), (6, 330070), (10, 198042), (12, 165035), (13, 152340), (15, 132028), (20, 99021), (26, 76170), (30, 66014), (39, 50780), (52, 38085), (60, 33007), (65, 30468), (78, 25390), (130, 15234), (156, 12695), (195, 10156), (260, 7617), (390, 5078), (780, 2539)]