19747750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 41513472

約数和(自身を除く): 21765722

約数列:

[1, 2, 5, 10, 11, 22, 25, 43, 50, 55, 86, 110, 125, 167, 215, 250, 275, 334, 430, 473, 550, 835, 946, 1075, 1375, 1670, 1837, 2150, 2365, 2750, 3674, 4175, 4730, 5375, 7181, 8350, 9185, 10750, 11825, 14362, 18370, 20875, 23650, 35905, 41750, 45925, 59125, 71810, 78991, 91850, 118250, 157982, 179525, 229625, 359050, 394955, 459250, 789910, 897625, 1795250, 1974775, 3949550, 9873875, 19747750]

約数ペア:

[(1, 19747750), (2, 9873875), (5, 3949550), (10, 1974775), (11, 1795250), (22, 897625), (25, 789910), (43, 459250), (50, 394955), (55, 359050), (86, 229625), (110, 179525), (125, 157982), (167, 118250), (215, 91850), (250, 78991), (275, 71810), (334, 59125), (430, 45925), (473, 41750), (550, 35905), (835, 23650), (946, 20875), (1075, 18370), (1375, 14362), (1670, 11825), (1837, 10750), (2150, 9185), (2365, 8350), (2750, 7181), (3674, 5375), (4175, 4730)]