261818865

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:404

約数の個数: 128

約数和(自身を含む): 588902400

約数和(自身を除く): 327083535

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 89, 99, 105, 135, 165, 189, 231, 267, 283, 297, 315, 385, 445, 495, 623, 693, 801, 849, 945, 979, 1155, 1335, 1415, 1485, 1869, 1981, 2079, 2403, 2547, 2937, 3113, 3115, 3465, 4005, 4245, 4895, 5607, 5943, 6853, 7641, 8811, 9339, 9345, 9905, 10395, 12015, 12735, 14685, 15565, 16821, 17829, 20559, 21791, 25187, 26433, 28017, 28035, 29715, 34265, 38205, 44055, 46695, 53487, 61677, 65373, 75561, 84051, 84105, 89145, 102795, 108955, 125935, 132165, 140085, 176309, 185031, 196119, 226683, 267435, 277057, 308385, 326865, 377805, 420255, 528927, 588357, 680049, 831171, 881545, 925155, 980595, 1133415, 1385285, 1586781, 1939399, 2493513, 2644635, 2941785, 3400245, 4155855, 4760343, 5818197, 7480539, 7933905, 9696995, 12467565, 17454591, 23801715, 29090985, 37402695, 52363773, 87272955, 261818865]

約数ペア:

[(1, 261818865), (3, 87272955), (5, 52363773), (7, 37402695), (9, 29090985), (11, 23801715), (15, 17454591), (21, 12467565), (27, 9696995), (33, 7933905), (35, 7480539), (45, 5818197), (55, 4760343), (63, 4155855), (77, 3400245), (89, 2941785), (99, 2644635), (105, 2493513), (135, 1939399), (165, 1586781), (189, 1385285), (231, 1133415), (267, 980595), (283, 925155), (297, 881545), (315, 831171), (385, 680049), (445, 588357), (495, 528927), (623, 420255), (693, 377805), (801, 326865), (849, 308385), (945, 277057), (979, 267435), (1155, 226683), (1335, 196119), (1415, 185031), (1485, 176309), (1869, 140085), (1981, 132165), (2079, 125935), (2403, 108955), (2547, 102795), (2937, 89145), (3113, 84105), (3115, 84051), (3465, 75561), (4005, 65373), (4245, 61677), (4895, 53487), (5607, 46695), (5943, 44055), (6853, 38205), (7641, 34265), (8811, 29715), (9339, 28035), (9345, 28017), (9905, 26433), (10395, 25187), (12015, 21791), (12735, 20559), (14685, 17829), (15565, 16821)]