51500020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1637}}^1$

素因数の和:1681

約数の個数: 72

約数和(自身を含む): 128098152

約数和(自身を除く): 76598132

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 1210, 1430, 1573, 1637, 2420, 2860, 3146, 3274, 6292, 6548, 7865, 8185, 15730, 16370, 18007, 21281, 31460, 32740, 36014, 42562, 72028, 85124, 90035, 106405, 180070, 198077, 212810, 234091, 360140, 396154, 425620, 468182, 792308, 936364, 990385, 1170455, 1980770, 2340910, 2575001, 3961540, 4681820, 5150002, 10300004, 12875005, 25750010, 51500020]

約数ペア:

[(1, 51500020), (2, 25750010), (4, 12875005), (5, 10300004), (10, 5150002), (11, 4681820), (13, 3961540), (20, 2575001), (22, 2340910), (26, 1980770), (44, 1170455), (52, 990385), (55, 936364), (65, 792308), (110, 468182), (121, 425620), (130, 396154), (143, 360140), (220, 234091), (242, 212810), (260, 198077), (286, 180070), (484, 106405), (572, 90035), (605, 85124), (715, 72028), (1210, 42562), (1430, 36014), (1573, 32740), (1637, 31460), (2420, 21281), (2860, 18007), (3146, 16370), (3274, 15730), (6292, 8185), (6548, 7865)]