20995504

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{967}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 22216016

約数列:

[1, 2, 4, 8, 16, 23, 46, 59, 92, 118, 184, 236, 368, 472, 944, 967, 1357, 1934, 2714, 3868, 5428, 7736, 10856, 15472, 21712, 22241, 44482, 57053, 88964, 114106, 177928, 228212, 355856, 456424, 912848, 1312219, 2624438, 5248876, 10497752, 20995504]

約数ペア:

[(1, 20995504), (2, 10497752), (4, 5248876), (8, 2624438), (16, 1312219), (23, 912848), (46, 456424), (59, 355856), (92, 228212), (118, 177928), (184, 114106), (236, 88964), (368, 57053), (472, 44482), (944, 22241), (967, 21712), (1357, 15472), (1934, 10856), (2714, 7736), (3868, 5428)]