128716140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{43781}}^1$

素因数の和:43807

約数の個数: 72

約数和(自身を含む): 419256432

約数和(自身を除く): 290540292

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, 43781, 87562, 131343, 175124, 218905, 262686, 306467, 437810, 525372, 612934, 656715, 875620, 919401, 1225868, 1313430, 1532335, 1838802, 2145269, 2626860, 3064670, 3677604, 4290538, 4597005, 6129340, 6435807, 8581076, 9194010, 10726345, 12871614, 18388020, 21452690, 25743228, 32179035, 42905380, 64358070, 128716140]

約数ペア:

[(1, 128716140), (2, 64358070), (3, 42905380), (4, 32179035), (5, 25743228), (6, 21452690), (7, 18388020), (10, 12871614), (12, 10726345), (14, 9194010), (15, 8581076), (20, 6435807), (21, 6129340), (28, 4597005), (30, 4290538), (35, 3677604), (42, 3064670), (49, 2626860), (60, 2145269), (70, 1838802), (84, 1532335), (98, 1313430), (105, 1225868), (140, 919401), (147, 875620), (196, 656715), (210, 612934), (245, 525372), (294, 437810), (420, 306467), (490, 262686), (588, 218905), (735, 175124), (980, 131343), (1470, 87562), (2940, 43781)]