400874640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53881}}^1$

素因数の和:53928

約数の個数: 80

約数和(自身を含む): 1282822656

約数和(自身を除く): 881948016

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 3720, 7440, 53881, 107762, 161643, 215524, 269405, 323286, 431048, 538810, 646572, 808215, 862096, 1077620, 1293144, 1616430, 1670311, 2155240, 2586288, 3232860, 3340622, 4310480, 5010933, 6465720, 6681244, 8351555, 10021866, 12931440, 13362488, 16703110, 20043732, 25054665, 26724976, 33406220, 40087464, 50109330, 66812440, 80174928, 100218660, 133624880, 200437320, 400874640]

約数ペア:

[(1, 400874640), (2, 200437320), (3, 133624880), (4, 100218660), (5, 80174928), (6, 66812440), (8, 50109330), (10, 40087464), (12, 33406220), (15, 26724976), (16, 25054665), (20, 20043732), (24, 16703110), (30, 13362488), (31, 12931440), (40, 10021866), (48, 8351555), (60, 6681244), (62, 6465720), (80, 5010933), (93, 4310480), (120, 3340622), (124, 3232860), (155, 2586288), (186, 2155240), (240, 1670311), (248, 1616430), (310, 1293144), (372, 1077620), (465, 862096), (496, 808215), (620, 646572), (744, 538810), (930, 431048), (1240, 323286), (1488, 269405), (1860, 215524), (2480, 161643), (3720, 107762), (7440, 53881)]