20493506

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 35427456

約数和(自身を除く): 14933950

約数列:

[1, 2, 11, 22, 23, 46, 101, 202, 253, 401, 506, 802, 1111, 2222, 2323, 4411, 4646, 8822, 9223, 18446, 25553, 40501, 51106, 81002, 101453, 202906, 445511, 891022, 931523, 1863046, 10246753, 20493506]

約数ペア:

[(1, 20493506), (2, 10246753), (11, 1863046), (22, 931523), (23, 891022), (46, 445511), (101, 202906), (202, 101453), (253, 81002), (401, 51106), (506, 40501), (802, 25553), (1111, 18446), (2222, 9223), (2323, 8822), (4411, 4646)]