78757780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 168892416

約数和(自身を除く): 90134636

約数列:

[1, 2, 4, 5, 10, 20, 101, 127, 202, 254, 307, 404, 505, 508, 614, 635, 1010, 1228, 1270, 1535, 2020, 2540, 3070, 6140, 12827, 25654, 31007, 38989, 51308, 62014, 64135, 77978, 124028, 128270, 155035, 155956, 194945, 256540, 310070, 389890, 620140, 779780, 3937889, 7875778, 15751556, 19689445, 39378890, 78757780]

約数ペア:

[(1, 78757780), (2, 39378890), (4, 19689445), (5, 15751556), (10, 7875778), (20, 3937889), (101, 779780), (127, 620140), (202, 389890), (254, 310070), (307, 256540), (404, 194945), (505, 155956), (508, 155035), (614, 128270), (635, 124028), (1010, 77978), (1228, 64135), (1270, 62014), (1535, 51308), (2020, 38989), (2540, 31007), (3070, 25654), (6140, 12827)]