1281455920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{942247}}^1$

素因数の和:942277

約数の個数: 40

約数和(自身を含む): 3154646304

約数和(自身を除く): 1873190384

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 942247, 1884494, 3768988, 4711235, 7537976, 9422470, 15075952, 16018199, 18844940, 32036398, 37689880, 64072796, 75379760, 80090995, 128145592, 160181990, 256291184, 320363980, 640727960, 1281455920]

約数ペア:

[(1, 1281455920), (2, 640727960), (4, 320363980), (5, 256291184), (8, 160181990), (10, 128145592), (16, 80090995), (17, 75379760), (20, 64072796), (34, 37689880), (40, 32036398), (68, 18844940), (80, 16018199), (85, 15075952), (136, 9422470), (170, 7537976), (272, 4711235), (340, 3768988), (680, 1884494), (1360, 942247)]