20511420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3319}}^1$

素因数の和:3434

約数の個数: 48

約数和(自身を含む): 58007040

約数和(自身を除く): 37495620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 103, 206, 309, 412, 515, 618, 1030, 1236, 1545, 2060, 3090, 3319, 6180, 6638, 9957, 13276, 16595, 19914, 33190, 39828, 49785, 66380, 99570, 199140, 341857, 683714, 1025571, 1367428, 1709285, 2051142, 3418570, 4102284, 5127855, 6837140, 10255710, 20511420]

約数ペア:

[(1, 20511420), (2, 10255710), (3, 6837140), (4, 5127855), (5, 4102284), (6, 3418570), (10, 2051142), (12, 1709285), (15, 1367428), (20, 1025571), (30, 683714), (60, 341857), (103, 199140), (206, 99570), (309, 66380), (412, 49785), (515, 39828), (618, 33190), (1030, 19914), (1236, 16595), (1545, 13276), (2060, 9957), (3090, 6638), (3319, 6180)]