128405475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1789}}^1$

素因数の和:1845

約数の個数: 72

約数和(自身を含む): 259693200

約数和(自身を除く): 131287725

約数列:

[1, 3, 5, 9, 11, 15, 25, 29, 33, 45, 55, 75, 87, 99, 145, 165, 225, 261, 275, 319, 435, 495, 725, 825, 957, 1305, 1595, 1789, 2175, 2475, 2871, 4785, 5367, 6525, 7975, 8945, 14355, 16101, 19679, 23925, 26835, 44725, 51881, 59037, 71775, 80505, 98395, 134175, 155643, 177111, 259405, 295185, 402525, 466929, 491975, 570691, 778215, 885555, 1297025, 1475925, 1712073, 2334645, 2853455, 3891075, 4427775, 5136219, 8560365, 11673225, 14267275, 25681095, 42801825, 128405475]

約数ペア:

[(1, 128405475), (3, 42801825), (5, 25681095), (9, 14267275), (11, 11673225), (15, 8560365), (25, 5136219), (29, 4427775), (33, 3891075), (45, 2853455), (55, 2334645), (75, 1712073), (87, 1475925), (99, 1297025), (145, 885555), (165, 778215), (225, 570691), (261, 491975), (275, 466929), (319, 402525), (435, 295185), (495, 259405), (725, 177111), (825, 155643), (957, 134175), (1305, 98395), (1595, 80505), (1789, 71775), (2175, 59037), (2475, 51881), (2871, 44725), (4785, 26835), (5367, 23925), (6525, 19679), (7975, 16101), (8945, 14355)]