20492705

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 6602335

約数列:

[1, 5, 29, 31, 47, 97, 145, 155, 235, 485, 899, 1363, 1457, 2813, 3007, 4495, 4559, 6815, 7285, 14065, 15035, 22795, 42253, 87203, 132211, 141329, 211265, 436015, 661055, 706645, 4098541, 20492705]

約数ペア:

[(1, 20492705), (5, 4098541), (29, 706645), (31, 661055), (47, 436015), (97, 211265), (145, 141329), (155, 132211), (235, 87203), (485, 42253), (899, 22795), (1363, 15035), (1457, 14065), (2813, 7285), (3007, 6815), (4495, 4559)]