20757385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 28926720

約数和(自身を除く): 8169335

約数列:

[1, 5, 11, 23, 55, 61, 115, 253, 269, 305, 671, 1265, 1345, 1403, 2959, 3355, 6187, 7015, 14795, 15433, 16409, 30935, 68057, 77165, 82045, 180499, 340285, 377407, 902495, 1887035, 4151477, 20757385]

約数ペア:

[(1, 20757385), (5, 4151477), (11, 1887035), (23, 902495), (55, 377407), (61, 340285), (115, 180499), (253, 82045), (269, 77165), (305, 68057), (671, 30935), (1265, 16409), (1345, 15433), (1403, 14795), (2959, 7015), (3355, 6187)]