20702940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20297}}^1$

素因数の和:20326

約数の個数: 48

約数和(自身を含む): 61381152

約数和(自身を除く): 40678212

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20297, 40594, 60891, 81188, 101485, 121782, 202970, 243564, 304455, 345049, 405940, 608910, 690098, 1035147, 1217820, 1380196, 1725245, 2070294, 3450490, 4140588, 5175735, 6900980, 10351470, 20702940]

約数ペア:

[(1, 20702940), (2, 10351470), (3, 6900980), (4, 5175735), (5, 4140588), (6, 3450490), (10, 2070294), (12, 1725245), (15, 1380196), (17, 1217820), (20, 1035147), (30, 690098), (34, 608910), (51, 405940), (60, 345049), (68, 304455), (85, 243564), (102, 202970), (170, 121782), (204, 101485), (255, 81188), (340, 60891), (510, 40594), (1020, 20297)]