2781960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 8467200

約数和(自身を除く): 5685240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 97, 120, 194, 239, 291, 388, 478, 485, 582, 717, 776, 956, 970, 1164, 1195, 1434, 1455, 1912, 1940, 2328, 2390, 2868, 2910, 3585, 3880, 4780, 5736, 5820, 7170, 9560, 11640, 14340, 23183, 28680, 46366, 69549, 92732, 115915, 139098, 185464, 231830, 278196, 347745, 463660, 556392, 695490, 927320, 1390980, 2781960]

約数ペア:

[(1, 2781960), (2, 1390980), (3, 927320), (4, 695490), (5, 556392), (6, 463660), (8, 347745), (10, 278196), (12, 231830), (15, 185464), (20, 139098), (24, 115915), (30, 92732), (40, 69549), (60, 46366), (97, 28680), (120, 23183), (194, 14340), (239, 11640), (291, 9560), (388, 7170), (478, 5820), (485, 5736), (582, 4780), (717, 3880), (776, 3585), (956, 2910), (970, 2868), (1164, 2390), (1195, 2328), (1434, 1940), (1455, 1912)]