128789375

素因数分解:

$5^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:186

約数の個数: 60

約数和(自身を含む): 191957304

約数和(自身を除く): 63167929

約数列:

[1, 5, 11, 13, 25, 55, 65, 121, 125, 131, 143, 275, 325, 605, 625, 655, 715, 1375, 1441, 1573, 1625, 1703, 3025, 3275, 3575, 6875, 7205, 7865, 8125, 8515, 15125, 15851, 16375, 17875, 18733, 36025, 39325, 42575, 75625, 79255, 81875, 89375, 93665, 180125, 196625, 206063, 212875, 396275, 468325, 900625, 983125, 1030315, 1064375, 1981375, 2341625, 5151575, 9906875, 11708125, 25757875, 128789375]

約数ペア:

[(1, 128789375), (5, 25757875), (11, 11708125), (13, 9906875), (25, 5151575), (55, 2341625), (65, 1981375), (121, 1064375), (125, 1030315), (131, 983125), (143, 900625), (275, 468325), (325, 396275), (605, 212875), (625, 206063), (655, 196625), (715, 180125), (1375, 93665), (1441, 89375), (1573, 81875), (1625, 79255), (1703, 75625), (3025, 42575), (3275, 39325), (3575, 36025), (6875, 18733), (7205, 17875), (7865, 16375), (8125, 15851), (8515, 15125)]