20650175

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 32706240

約数和(自身を除く): 12056065

約数列:

[1, 5, 7, 13, 25, 29, 35, 65, 91, 145, 175, 203, 313, 325, 377, 455, 725, 1015, 1565, 1885, 2191, 2275, 2639, 4069, 5075, 7825, 9077, 9425, 10955, 13195, 20345, 28483, 45385, 54775, 63539, 65975, 101725, 118001, 142415, 226925, 317695, 590005, 712075, 826007, 1588475, 2950025, 4130035, 20650175]

約数ペア:

[(1, 20650175), (5, 4130035), (7, 2950025), (13, 1588475), (25, 826007), (29, 712075), (35, 590005), (65, 317695), (91, 226925), (145, 142415), (175, 118001), (203, 101725), (313, 65975), (325, 63539), (377, 54775), (455, 45385), (725, 28483), (1015, 20345), (1565, 13195), (1885, 10955), (2191, 9425), (2275, 9077), (2639, 7825), (4069, 5075)]