20205510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:629

約数の個数: 64

約数和(自身を含む): 52835328

約数和(自身を除く): 32629818

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 103, 130, 195, 206, 309, 390, 503, 515, 618, 1006, 1030, 1339, 1509, 1545, 2515, 2678, 3018, 3090, 4017, 5030, 6539, 6695, 7545, 8034, 13078, 13390, 15090, 19617, 20085, 32695, 39234, 40170, 51809, 65390, 98085, 103618, 155427, 196170, 259045, 310854, 518090, 673517, 777135, 1347034, 1554270, 2020551, 3367585, 4041102, 6735170, 10102755, 20205510]

約数ペア:

[(1, 20205510), (2, 10102755), (3, 6735170), (5, 4041102), (6, 3367585), (10, 2020551), (13, 1554270), (15, 1347034), (26, 777135), (30, 673517), (39, 518090), (65, 310854), (78, 259045), (103, 196170), (130, 155427), (195, 103618), (206, 98085), (309, 65390), (390, 51809), (503, 40170), (515, 39234), (618, 32695), (1006, 20085), (1030, 19617), (1339, 15090), (1509, 13390), (1545, 13078), (2515, 8034), (2678, 7545), (3018, 6695), (3090, 6539), (4017, 5030)]