20706680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{823}}^1$

素因数の和:888

約数の個数: 64

約数和(自身を含む): 50725440

約数和(自身を除く): 30018760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 68, 74, 85, 136, 148, 170, 185, 296, 340, 370, 629, 680, 740, 823, 1258, 1480, 1646, 2516, 3145, 3292, 4115, 5032, 6290, 6584, 8230, 12580, 13991, 16460, 25160, 27982, 30451, 32920, 55964, 60902, 69955, 111928, 121804, 139910, 152255, 243608, 279820, 304510, 517667, 559640, 609020, 1035334, 1218040, 2070668, 2588335, 4141336, 5176670, 10353340, 20706680]

約数ペア:

[(1, 20706680), (2, 10353340), (4, 5176670), (5, 4141336), (8, 2588335), (10, 2070668), (17, 1218040), (20, 1035334), (34, 609020), (37, 559640), (40, 517667), (68, 304510), (74, 279820), (85, 243608), (136, 152255), (148, 139910), (170, 121804), (185, 111928), (296, 69955), (340, 60902), (370, 55964), (629, 32920), (680, 30451), (740, 27982), (823, 25160), (1258, 16460), (1480, 13991), (1646, 12580), (2516, 8230), (3145, 6584), (3292, 6290), (4115, 5032)]