21185374175

素因数分解:

$5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{751921}}^1$

素因数の和:751968

約数の個数: 36

約数和(自身を含む): 31887508176

約数和(自身を除く): 10702134001

約数列:

[1, 5, 7, 23, 25, 35, 49, 115, 161, 175, 245, 575, 805, 1127, 1225, 4025, 5635, 28175, 751921, 3759605, 5263447, 17294183, 18798025, 26317235, 36844129, 86470915, 121059281, 131586175, 184220645, 432354575, 605296405, 847414967, 921103225, 3026482025, 4237074835, 21185374175]

約数ペア:

[(1, 21185374175), (5, 4237074835), (7, 3026482025), (23, 921103225), (25, 847414967), (35, 605296405), (49, 432354575), (115, 184220645), (161, 131586175), (175, 121059281), (245, 86470915), (575, 36844129), (805, 26317235), (1127, 18798025), (1225, 17294183), (4025, 5263447), (5635, 3759605), (28175, 751921)]