20121173805

素因数分解:

$3^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{661}}^1\times {\mathrm{17959}}^1$

素因数の和:18741

約数の個数: 32

約数和(自身を含む): 32529726720

約数和(自身を除く): 12408552915

約数列:

[1, 3, 5, 15, 113, 339, 565, 661, 1695, 1983, 3305, 9915, 17959, 53877, 74693, 89795, 224079, 269385, 373465, 1120395, 2029367, 6088101, 10146835, 11870899, 30440505, 35612697, 59354495, 178063485, 1341411587, 4024234761, 6707057935, 20121173805]

約数ペア:

[(1, 20121173805), (3, 6707057935), (5, 4024234761), (15, 1341411587), (113, 178063485), (339, 59354495), (565, 35612697), (661, 30440505), (1695, 11870899), (1983, 10146835), (3305, 6088101), (9915, 2029367), (17959, 1120395), (53877, 373465), (74693, 269385), (89795, 224079)]