20854190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{10273}}^1$

素因数の和:10316

約数の個数: 32

約数和(自身を含む): 44383680

約数和(自身を除く): 23529490

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 10273, 20546, 51365, 71911, 102730, 143822, 297917, 359555, 595834, 719110, 1489585, 2085419, 2979170, 4170838, 10427095, 20854190]

約数ペア:

[(1, 20854190), (2, 10427095), (5, 4170838), (7, 2979170), (10, 2085419), (14, 1489585), (29, 719110), (35, 595834), (58, 359555), (70, 297917), (145, 143822), (203, 102730), (290, 71911), (406, 51365), (1015, 20546), (2030, 10273)]