66981040

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2441}}^1$

素因数の和:2475

約数の個数: 80

約数和(自身を含む): 181684800

約数和(自身を除く): 114703760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2441, 2744, 3430, 3920, 4882, 5488, 6860, 9764, 12205, 13720, 17087, 19528, 24410, 27440, 34174, 39056, 48820, 68348, 85435, 97640, 119609, 136696, 170870, 195280, 239218, 273392, 341740, 478436, 598045, 683480, 837263, 956872, 1196090, 1366960, 1674526, 1913744, 2392180, 3349052, 4186315, 4784360, 6698104, 8372630, 9568720, 13396208, 16745260, 33490520, 66981040]

約数ペア:

[(1, 66981040), (2, 33490520), (4, 16745260), (5, 13396208), (7, 9568720), (8, 8372630), (10, 6698104), (14, 4784360), (16, 4186315), (20, 3349052), (28, 2392180), (35, 1913744), (40, 1674526), (49, 1366960), (56, 1196090), (70, 956872), (80, 837263), (98, 683480), (112, 598045), (140, 478436), (196, 341740), (245, 273392), (280, 239218), (343, 195280), (392, 170870), (490, 136696), (560, 119609), (686, 97640), (784, 85435), (980, 68348), (1372, 48820), (1715, 39056), (1960, 34174), (2441, 27440), (2744, 24410), (3430, 19528), (3920, 17087), (4882, 13720), (5488, 12205), (6860, 9764)]