20742918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:341

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 29438202

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 69, 109, 138, 161, 197, 218, 322, 327, 394, 483, 591, 654, 763, 966, 1182, 1379, 1526, 2289, 2507, 2758, 4137, 4531, 4578, 5014, 7521, 8274, 9062, 13593, 15042, 17549, 21473, 27186, 31717, 35098, 42946, 52647, 63434, 64419, 95151, 105294, 128838, 150311, 190302, 300622, 450933, 493879, 901866, 987758, 1481637, 2963274, 3457153, 6914306, 10371459, 20742918]

約数ペア:

[(1, 20742918), (2, 10371459), (3, 6914306), (6, 3457153), (7, 2963274), (14, 1481637), (21, 987758), (23, 901866), (42, 493879), (46, 450933), (69, 300622), (109, 190302), (138, 150311), (161, 128838), (197, 105294), (218, 95151), (322, 64419), (327, 63434), (394, 52647), (483, 42946), (591, 35098), (654, 31717), (763, 27186), (966, 21473), (1182, 17549), (1379, 15042), (1526, 13593), (2289, 9062), (2507, 8274), (2758, 7521), (4137, 5014), (4531, 4578)]