8398460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 20321280

約数和(自身を除く): 11922820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 251, 478, 502, 956, 1004, 1195, 1255, 1673, 1757, 2390, 2510, 3346, 3514, 4780, 5020, 6692, 7028, 8365, 8785, 16730, 17570, 33460, 35140, 59989, 119978, 239956, 299945, 419923, 599890, 839846, 1199780, 1679692, 2099615, 4199230, 8398460]

約数ペア:

[(1, 8398460), (2, 4199230), (4, 2099615), (5, 1679692), (7, 1199780), (10, 839846), (14, 599890), (20, 419923), (28, 299945), (35, 239956), (70, 119978), (140, 59989), (239, 35140), (251, 33460), (478, 17570), (502, 16730), (956, 8785), (1004, 8365), (1195, 7028), (1255, 6692), (1673, 5020), (1757, 4780), (2390, 3514), (2510, 3346)]