19929770

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:567

約数の個数: 48

約数和(自身を含む): 42291720

約数和(自身を除く): 22361950

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 89, 98, 178, 245, 445, 457, 490, 623, 890, 914, 1246, 2285, 3115, 3199, 4361, 4570, 6230, 6398, 8722, 15995, 21805, 22393, 31990, 40673, 43610, 44786, 81346, 111965, 203365, 223930, 284711, 406730, 569422, 1423555, 1992977, 2847110, 3985954, 9964885, 19929770]

約数ペア:

[(1, 19929770), (2, 9964885), (5, 3985954), (7, 2847110), (10, 1992977), (14, 1423555), (35, 569422), (49, 406730), (70, 284711), (89, 223930), (98, 203365), (178, 111965), (245, 81346), (445, 44786), (457, 43610), (490, 40673), (623, 31990), (890, 22393), (914, 21805), (1246, 15995), (2285, 8722), (3115, 6398), (3199, 6230), (4361, 4570)]