21581534

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:500

約数の個数: 32

約数和(自身を含む): 37267776

約数和(自身を除く): 15686242

約数列:

[1, 2, 13, 17, 26, 34, 157, 221, 311, 314, 442, 622, 2041, 2669, 4043, 4082, 5287, 5338, 8086, 10574, 34697, 48827, 68731, 69394, 97654, 137462, 634751, 830059, 1269502, 1660118, 10790767, 21581534]

約数ペア:

[(1, 21581534), (2, 10790767), (13, 1660118), (17, 1269502), (26, 830059), (34, 634751), (157, 137462), (221, 97654), (311, 69394), (314, 68731), (442, 48827), (622, 34697), (2041, 10574), (2669, 8086), (4043, 5338), (4082, 5287)]