19912750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1$

素因数の和:598

約数の個数: 64

約数和(自身を含む): 43872192

約数和(自身を除く): 23959442

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 125, 130, 143, 250, 275, 286, 325, 550, 557, 650, 715, 1114, 1375, 1430, 1625, 2750, 2785, 3250, 3575, 5570, 6127, 7150, 7241, 12254, 13925, 14482, 17875, 27850, 30635, 35750, 36205, 61270, 69625, 72410, 79651, 139250, 153175, 159302, 181025, 306350, 362050, 398255, 765875, 796510, 905125, 1531750, 1810250, 1991275, 3982550, 9956375, 19912750]

約数ペア:

[(1, 19912750), (2, 9956375), (5, 3982550), (10, 1991275), (11, 1810250), (13, 1531750), (22, 905125), (25, 796510), (26, 765875), (50, 398255), (55, 362050), (65, 306350), (110, 181025), (125, 159302), (130, 153175), (143, 139250), (250, 79651), (275, 72410), (286, 69625), (325, 61270), (550, 36205), (557, 35750), (650, 30635), (715, 27850), (1114, 17875), (1375, 14482), (1430, 13925), (1625, 12254), (2750, 7241), (2785, 7150), (3250, 6127), (3575, 5570)]