20996150

素因数分解:

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

素因数の和:509

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 24000970

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 239, 251, 350, 478, 502, 1195, 1255, 1673, 1757, 2390, 2510, 3346, 3514, 5975, 6275, 8365, 8785, 11950, 12550, 16730, 17570, 41825, 43925, 59989, 83650, 87850, 119978, 299945, 419923, 599890, 839846, 1499725, 2099615, 2999450, 4199230, 10498075, 20996150]

約数ペア:

[(1, 20996150), (2, 10498075), (5, 4199230), (7, 2999450), (10, 2099615), (14, 1499725), (25, 839846), (35, 599890), (50, 419923), (70, 299945), (175, 119978), (239, 87850), (251, 83650), (350, 59989), (478, 43925), (502, 41825), (1195, 17570), (1255, 16730), (1673, 12550), (1757, 11950), (2390, 8785), (2510, 8365), (3346, 6275), (3514, 5975)]