20425808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{347}}^1$

素因数の和:651

約数の個数: 40

約数和(自身を含む): 42893088

約数和(自身を除く): 22467280

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 283, 347, 566, 694, 1132, 1388, 2264, 2776, 3679, 4511, 4528, 5552, 7358, 9022, 14716, 18044, 29432, 36088, 58864, 72176, 98201, 196402, 392804, 785608, 1276613, 1571216, 2553226, 5106452, 10212904, 20425808]

約数ペア:

[(1, 20425808), (2, 10212904), (4, 5106452), (8, 2553226), (13, 1571216), (16, 1276613), (26, 785608), (52, 392804), (104, 196402), (208, 98201), (283, 72176), (347, 58864), (566, 36088), (694, 29432), (1132, 18044), (1388, 14716), (2264, 9022), (2776, 7358), (3679, 5552), (4511, 4528)]