20009885

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 30139776

約数和(自身を除く): 10129891

約数列:

[1, 5, 7, 23, 35, 49, 53, 67, 115, 161, 245, 265, 335, 371, 469, 805, 1127, 1219, 1541, 1855, 2345, 2597, 3283, 3551, 5635, 6095, 7705, 8533, 10787, 12985, 16415, 17755, 24857, 42665, 53935, 59731, 75509, 81673, 124285, 173999, 298655, 377545, 408365, 571711, 869995, 2858555, 4001977, 20009885]

約数ペア:

[(1, 20009885), (5, 4001977), (7, 2858555), (23, 869995), (35, 571711), (49, 408365), (53, 377545), (67, 298655), (115, 173999), (161, 124285), (245, 81673), (265, 75509), (335, 59731), (371, 53935), (469, 42665), (805, 24857), (1127, 17755), (1219, 16415), (1541, 12985), (1855, 10787), (2345, 8533), (2597, 7705), (3283, 6095), (3551, 5635)]