19669720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70249}}^1$

素因数の和:70267

約数の個数: 32

約数和(自身を含む): 50580000

約数和(自身を除く): 30910280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70249, 140498, 280996, 351245, 491743, 561992, 702490, 983486, 1404980, 1966972, 2458715, 2809960, 3933944, 4917430, 9834860, 19669720]

約数ペア:

[(1, 19669720), (2, 9834860), (4, 4917430), (5, 3933944), (7, 2809960), (8, 2458715), (10, 1966972), (14, 1404980), (20, 983486), (28, 702490), (35, 561992), (40, 491743), (56, 351245), (70, 280996), (140, 140498), (280, 70249)]