40940960

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^2$

素因数の和:214

約数の個数: 72

約数和(自身を含む): 100352196

約数和(自身を除く): 59411236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 79, 80, 82, 158, 160, 164, 205, 316, 328, 395, 410, 632, 656, 790, 820, 1264, 1312, 1580, 1640, 2528, 3160, 3239, 3280, 6241, 6320, 6478, 6560, 12482, 12640, 12956, 16195, 24964, 25912, 31205, 32390, 49928, 51824, 62410, 64780, 99856, 103648, 124820, 129560, 199712, 249640, 255881, 259120, 499280, 511762, 518240, 998560, 1023524, 1279405, 2047048, 2558810, 4094096, 5117620, 8188192, 10235240, 20470480, 40940960]

約数ペア:

[(1, 40940960), (2, 20470480), (4, 10235240), (5, 8188192), (8, 5117620), (10, 4094096), (16, 2558810), (20, 2047048), (32, 1279405), (40, 1023524), (41, 998560), (79, 518240), (80, 511762), (82, 499280), (158, 259120), (160, 255881), (164, 249640), (205, 199712), (316, 129560), (328, 124820), (395, 103648), (410, 99856), (632, 64780), (656, 62410), (790, 51824), (820, 49928), (1264, 32390), (1312, 31205), (1580, 25912), (1640, 24964), (2528, 16195), (3160, 12956), (3239, 12640), (3280, 12482), (6241, 6560), (6320, 6478)]