16890020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{541}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 40793088

約数和(自身を除く): 23903068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 541, 892, 1082, 1115, 1561, 2164, 2230, 2705, 3122, 3787, 4460, 5410, 6244, 7574, 7805, 10820, 15148, 15610, 18935, 31220, 37870, 75740, 120643, 241286, 482572, 603215, 844501, 1206430, 1689002, 2412860, 3378004, 4222505, 8445010, 16890020]

約数ペア:

[(1, 16890020), (2, 8445010), (4, 4222505), (5, 3378004), (7, 2412860), (10, 1689002), (14, 1206430), (20, 844501), (28, 603215), (35, 482572), (70, 241286), (140, 120643), (223, 75740), (446, 37870), (541, 31220), (892, 18935), (1082, 15610), (1115, 15148), (1561, 10820), (2164, 7805), (2230, 7574), (2705, 6244), (3122, 5410), (3787, 4460)]