72912980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1583}}^1$

素因数の和:1653

約数の個数: 72

約数和(自身を含む): 182020608

約数和(自身を除く): 109107628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 470, 490, 658, 940, 980, 1316, 1583, 1645, 2303, 3166, 3290, 4606, 6332, 6580, 7915, 9212, 11081, 11515, 15830, 22162, 23030, 31660, 44324, 46060, 55405, 74401, 77567, 110810, 148802, 155134, 221620, 297604, 310268, 372005, 387835, 520807, 744010, 775670, 1041614, 1488020, 1551340, 2083228, 2604035, 3645649, 5208070, 7291298, 10416140, 14582596, 18228245, 36456490, 72912980]

約数ペア:

[(1, 72912980), (2, 36456490), (4, 18228245), (5, 14582596), (7, 10416140), (10, 7291298), (14, 5208070), (20, 3645649), (28, 2604035), (35, 2083228), (47, 1551340), (49, 1488020), (70, 1041614), (94, 775670), (98, 744010), (140, 520807), (188, 387835), (196, 372005), (235, 310268), (245, 297604), (329, 221620), (470, 155134), (490, 148802), (658, 110810), (940, 77567), (980, 74401), (1316, 55405), (1583, 46060), (1645, 44324), (2303, 31660), (3166, 23030), (3290, 22162), (4606, 15830), (6332, 11515), (6580, 11081), (7915, 9212)]