256634775

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1063}}^1$

素因数の和:1145

約数の個数: 72

約数和(自身を含む): 488822880

約数和(自身を除く): 232188105

約数列:

[1, 3, 5, 9, 15, 25, 29, 37, 45, 75, 87, 111, 145, 185, 225, 261, 333, 435, 555, 725, 925, 1063, 1073, 1305, 1665, 2175, 2775, 3189, 3219, 5315, 5365, 6525, 8325, 9567, 9657, 15945, 16095, 26575, 26825, 30827, 39331, 47835, 48285, 79725, 80475, 92481, 117993, 154135, 196655, 239175, 241425, 277443, 353979, 462405, 589965, 770675, 983275, 1140599, 1387215, 1769895, 2312025, 2949825, 3421797, 5702995, 6936075, 8849475, 10265391, 17108985, 28514975, 51326955, 85544925, 256634775]

約数ペア:

[(1, 256634775), (3, 85544925), (5, 51326955), (9, 28514975), (15, 17108985), (25, 10265391), (29, 8849475), (37, 6936075), (45, 5702995), (75, 3421797), (87, 2949825), (111, 2312025), (145, 1769895), (185, 1387215), (225, 1140599), (261, 983275), (333, 770675), (435, 589965), (555, 462405), (725, 353979), (925, 277443), (1063, 241425), (1073, 239175), (1305, 196655), (1665, 154135), (2175, 117993), (2775, 92481), (3189, 80475), (3219, 79725), (5315, 48285), (5365, 47835), (6525, 39331), (8325, 30827), (9567, 26825), (9657, 26575), (15945, 16095)]