21418150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:505

約数の個数: 48

約数和(自身を含む): 43528464

約数和(自身を除く): 22110314

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 83, 130, 166, 325, 397, 415, 650, 794, 830, 1079, 1985, 2075, 2158, 3970, 4150, 5161, 5395, 9925, 10322, 10790, 19850, 25805, 26975, 32951, 51610, 53950, 65902, 129025, 164755, 258050, 329510, 428363, 823775, 856726, 1647550, 2141815, 4283630, 10709075, 21418150]

約数ペア:

[(1, 21418150), (2, 10709075), (5, 4283630), (10, 2141815), (13, 1647550), (25, 856726), (26, 823775), (50, 428363), (65, 329510), (83, 258050), (130, 164755), (166, 129025), (325, 65902), (397, 53950), (415, 51610), (650, 32951), (794, 26975), (830, 25805), (1079, 19850), (1985, 10790), (2075, 10322), (2158, 9925), (3970, 5395), (4150, 5161)]