20532640

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{709}}^1$

素因数の和:905

約数の個数: 48

約数和(自身を含む): 48845160

約数和(自身を除く): 28312520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 709, 724, 905, 1418, 1448, 1810, 2836, 2896, 3545, 3620, 5672, 5792, 7090, 7240, 11344, 14180, 14480, 22688, 28360, 28960, 56720, 113440, 128329, 256658, 513316, 641645, 1026632, 1283290, 2053264, 2566580, 4106528, 5133160, 10266320, 20532640]

約数ペア:

[(1, 20532640), (2, 10266320), (4, 5133160), (5, 4106528), (8, 2566580), (10, 2053264), (16, 1283290), (20, 1026632), (32, 641645), (40, 513316), (80, 256658), (160, 128329), (181, 113440), (362, 56720), (709, 28960), (724, 28360), (905, 22688), (1418, 14480), (1448, 14180), (1810, 11344), (2836, 7240), (2896, 7090), (3545, 5792), (3620, 5672)]