19936140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6781}}^1$

素因数の和:6807

約数の個数: 72

約数和(自身を含む): 64944432

約数和(自身を除く): 45008292

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6781, 13562, 20343, 27124, 33905, 40686, 47467, 67810, 81372, 94934, 101715, 135620, 142401, 189868, 203430, 237335, 284802, 332269, 406860, 474670, 569604, 664538, 712005, 949340, 996807, 1329076, 1424010, 1661345, 1993614, 2848020, 3322690, 3987228, 4984035, 6645380, 9968070, 19936140]

約数ペア:

[(1, 19936140), (2, 9968070), (3, 6645380), (4, 4984035), (5, 3987228), (6, 3322690), (7, 2848020), (10, 1993614), (12, 1661345), (14, 1424010), (15, 1329076), (20, 996807), (21, 949340), (28, 712005), (30, 664538), (35, 569604), (42, 474670), (49, 406860), (60, 332269), (70, 284802), (84, 237335), (98, 203430), (105, 189868), (140, 142401), (147, 135620), (196, 101715), (210, 94934), (245, 81372), (294, 67810), (420, 47467), (490, 40686), (588, 33905), (735, 27124), (980, 20343), (1470, 13562), (2940, 6781)]