81182440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2887}}^1$

素因数の和:2954

約数の個数: 64

約数和(自身を含む): 197539200

約数和(自身を除く): 116356760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 703, 740, 760, 1406, 1480, 2812, 2887, 3515, 5624, 5774, 7030, 11548, 14060, 14435, 23096, 28120, 28870, 54853, 57740, 106819, 109706, 115480, 213638, 219412, 274265, 427276, 438824, 534095, 548530, 854552, 1068190, 1097060, 2029561, 2136380, 2194120, 4059122, 4272760, 8118244, 10147805, 16236488, 20295610, 40591220, 81182440]

約数ペア:

[(1, 81182440), (2, 40591220), (4, 20295610), (5, 16236488), (8, 10147805), (10, 8118244), (19, 4272760), (20, 4059122), (37, 2194120), (38, 2136380), (40, 2029561), (74, 1097060), (76, 1068190), (95, 854552), (148, 548530), (152, 534095), (185, 438824), (190, 427276), (296, 274265), (370, 219412), (380, 213638), (703, 115480), (740, 109706), (760, 106819), (1406, 57740), (1480, 54853), (2812, 28870), (2887, 28120), (3515, 23096), (5624, 14435), (5774, 14060), (7030, 11548)]