80728720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{307}}^1$

素因数の和:512

約数の個数: 80

約数和(自身を含む): 199362240

約数和(自身を除く): 118633520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 173, 190, 304, 307, 346, 380, 614, 692, 760, 865, 1228, 1384, 1520, 1535, 1730, 2456, 2768, 3070, 3287, 3460, 4912, 5833, 6140, 6574, 6920, 11666, 12280, 13148, 13840, 16435, 23332, 24560, 26296, 29165, 32870, 46664, 52592, 53111, 58330, 65740, 93328, 106222, 116660, 131480, 212444, 233320, 262960, 265555, 424888, 466640, 531110, 849776, 1009109, 1062220, 2018218, 2124440, 4036436, 4248880, 5045545, 8072872, 10091090, 16145744, 20182180, 40364360, 80728720]

約数ペア:

[(1, 80728720), (2, 40364360), (4, 20182180), (5, 16145744), (8, 10091090), (10, 8072872), (16, 5045545), (19, 4248880), (20, 4036436), (38, 2124440), (40, 2018218), (76, 1062220), (80, 1009109), (95, 849776), (152, 531110), (173, 466640), (190, 424888), (304, 265555), (307, 262960), (346, 233320), (380, 212444), (614, 131480), (692, 116660), (760, 106222), (865, 93328), (1228, 65740), (1384, 58330), (1520, 53111), (1535, 52592), (1730, 46664), (2456, 32870), (2768, 29165), (3070, 26296), (3287, 24560), (3460, 23332), (4912, 16435), (5833, 13840), (6140, 13148), (6574, 12280), (6920, 11666)]