1263220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1289}}^1$

素因数の和:1312

約数の個数: 36

約数和(自身を含む): 3088260

約数和(自身を除く): 1825040

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1289, 2578, 5156, 6445, 9023, 12890, 18046, 25780, 36092, 45115, 63161, 90230, 126322, 180460, 252644, 315805, 631610, 1263220]

約数ペア:

[(1, 1263220), (2, 631610), (4, 315805), (5, 252644), (7, 180460), (10, 126322), (14, 90230), (20, 63161), (28, 45115), (35, 36092), (49, 25780), (70, 18046), (98, 12890), (140, 9023), (196, 6445), (245, 5156), (490, 2578), (980, 1289)]