80166620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 179836272

約数和(自身を除く): 99669652

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 97, 124, 155, 172, 194, 215, 310, 388, 430, 485, 620, 860, 961, 970, 1333, 1922, 1940, 2666, 3007, 3844, 4171, 4805, 5332, 6014, 6665, 8342, 9610, 12028, 13330, 15035, 16684, 19220, 20855, 26660, 30070, 41323, 41710, 60140, 82646, 83420, 93217, 129301, 165292, 186434, 206615, 258602, 372868, 413230, 466085, 517204, 646505, 826460, 932170, 1293010, 1864340, 2586020, 4008331, 8016662, 16033324, 20041655, 40083310, 80166620]

約数ペア:

[(1, 80166620), (2, 40083310), (4, 20041655), (5, 16033324), (10, 8016662), (20, 4008331), (31, 2586020), (43, 1864340), (62, 1293010), (86, 932170), (97, 826460), (124, 646505), (155, 517204), (172, 466085), (194, 413230), (215, 372868), (310, 258602), (388, 206615), (430, 186434), (485, 165292), (620, 129301), (860, 93217), (961, 83420), (970, 82646), (1333, 60140), (1922, 41710), (1940, 41323), (2666, 30070), (3007, 26660), (3844, 20855), (4171, 19220), (4805, 16684), (5332, 15035), (6014, 13330), (6665, 12028), (8342, 9610)]