128553620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:585

約数の個数: 96

約数和(自身を含む): 312439680

約数和(自身を除く): 183886060

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 53, 65, 76, 95, 106, 130, 190, 212, 247, 260, 265, 380, 491, 494, 530, 689, 982, 988, 1007, 1060, 1235, 1378, 1964, 2014, 2455, 2470, 2756, 3445, 4028, 4910, 4940, 5035, 6383, 6890, 9329, 9820, 10070, 12766, 13091, 13780, 18658, 20140, 25532, 26023, 26182, 31915, 37316, 46645, 52046, 52364, 63830, 65455, 93290, 104092, 121277, 127660, 130115, 130910, 186580, 242554, 260230, 261820, 338299, 485108, 494437, 520460, 606385, 676598, 988874, 1212770, 1353196, 1691495, 1977748, 2425540, 2472185, 3382990, 4944370, 6427681, 6765980, 9888740, 12855362, 25710724, 32138405, 64276810, 128553620]

約数ペア:

[(1, 128553620), (2, 64276810), (4, 32138405), (5, 25710724), (10, 12855362), (13, 9888740), (19, 6765980), (20, 6427681), (26, 4944370), (38, 3382990), (52, 2472185), (53, 2425540), (65, 1977748), (76, 1691495), (95, 1353196), (106, 1212770), (130, 988874), (190, 676598), (212, 606385), (247, 520460), (260, 494437), (265, 485108), (380, 338299), (491, 261820), (494, 260230), (530, 242554), (689, 186580), (982, 130910), (988, 130115), (1007, 127660), (1060, 121277), (1235, 104092), (1378, 93290), (1964, 65455), (2014, 63830), (2455, 52364), (2470, 52046), (2756, 46645), (3445, 37316), (4028, 31915), (4910, 26182), (4940, 26023), (5035, 25532), (6383, 20140), (6890, 18658), (9329, 13780), (9820, 13091), (10070, 12766)]