18702020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 40857600

約数和(自身を除く): 22155580

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 127, 148, 185, 199, 254, 370, 398, 508, 635, 740, 796, 995, 1270, 1990, 2540, 3980, 4699, 7363, 9398, 14726, 18796, 23495, 25273, 29452, 36815, 46990, 50546, 73630, 93980, 101092, 126365, 147260, 252730, 505460, 935101, 1870202, 3740404, 4675505, 9351010, 18702020]

約数ペア:

[(1, 18702020), (2, 9351010), (4, 4675505), (5, 3740404), (10, 1870202), (20, 935101), (37, 505460), (74, 252730), (127, 147260), (148, 126365), (185, 101092), (199, 93980), (254, 73630), (370, 50546), (398, 46990), (508, 36815), (635, 29452), (740, 25273), (796, 23495), (995, 18796), (1270, 14726), (1990, 9398), (2540, 7363), (3980, 4699)]