16788725

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 21564840

約数和(自身を除く): 4776115

約数列:

[1, 5, 25, 61, 101, 109, 305, 505, 545, 1525, 2525, 2725, 6161, 6649, 11009, 30805, 33245, 55045, 154025, 166225, 275225, 671549, 3357745, 16788725]

約数ペア:

[(1, 16788725), (5, 3357745), (25, 671549), (61, 275225), (101, 166225), (109, 154025), (305, 55045), (505, 33245), (545, 30805), (1525, 11009), (2525, 6649), (2725, 6161)]