19686544

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{461}}^1$

素因数の和:643

約数の個数: 40

約数和(自身を含む): 40731768

約数和(自身を除く): 21045224

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 272, 314, 461, 628, 922, 1256, 1844, 2512, 2669, 3688, 5338, 7376, 7837, 10676, 15674, 21352, 31348, 42704, 62696, 72377, 125392, 144754, 289508, 579016, 1158032, 1230409, 2460818, 4921636, 9843272, 19686544]

約数ペア:

[(1, 19686544), (2, 9843272), (4, 4921636), (8, 2460818), (16, 1230409), (17, 1158032), (34, 579016), (68, 289508), (136, 144754), (157, 125392), (272, 72377), (314, 62696), (461, 42704), (628, 31348), (922, 21352), (1256, 15674), (1844, 10676), (2512, 7837), (2669, 7376), (3688, 5338)]