81254640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:311

約数の個数: 160

約数和(自身を含む): 269268480

約数和(自身を除く): 188013840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 103, 114, 120, 152, 173, 190, 206, 228, 240, 285, 304, 309, 346, 380, 412, 456, 515, 519, 570, 618, 692, 760, 824, 865, 912, 1030, 1038, 1140, 1236, 1384, 1520, 1545, 1648, 1730, 1957, 2060, 2076, 2280, 2472, 2595, 2768, 3090, 3287, 3460, 3914, 4120, 4152, 4560, 4944, 5190, 5871, 6180, 6574, 6920, 7828, 8240, 8304, 9785, 9861, 10380, 11742, 12360, 13148, 13840, 15656, 16435, 17819, 19570, 19722, 20760, 23484, 24720, 26296, 29355, 31312, 32870, 35638, 39140, 39444, 41520, 46968, 49305, 52592, 53457, 58710, 65740, 71276, 78280, 78888, 89095, 93936, 98610, 106914, 117420, 131480, 142552, 156560, 157776, 178190, 197220, 213828, 234840, 262960, 267285, 285104, 338561, 356380, 394440, 427656, 469680, 534570, 677122, 712760, 788880, 855312, 1015683, 1069140, 1354244, 1425520, 1692805, 2031366, 2138280, 2708488, 3385610, 4062732, 4276560, 5078415, 5416976, 6771220, 8125464, 10156830, 13542440, 16250928, 20313660, 27084880, 40627320, 81254640]

約数ペア:

[(1, 81254640), (2, 40627320), (3, 27084880), (4, 20313660), (5, 16250928), (6, 13542440), (8, 10156830), (10, 8125464), (12, 6771220), (15, 5416976), (16, 5078415), (19, 4276560), (20, 4062732), (24, 3385610), (30, 2708488), (38, 2138280), (40, 2031366), (48, 1692805), (57, 1425520), (60, 1354244), (76, 1069140), (80, 1015683), (95, 855312), (103, 788880), (114, 712760), (120, 677122), (152, 534570), (173, 469680), (190, 427656), (206, 394440), (228, 356380), (240, 338561), (285, 285104), (304, 267285), (309, 262960), (346, 234840), (380, 213828), (412, 197220), (456, 178190), (515, 157776), (519, 156560), (570, 142552), (618, 131480), (692, 117420), (760, 106914), (824, 98610), (865, 93936), (912, 89095), (1030, 78888), (1038, 78280), (1140, 71276), (1236, 65740), (1384, 58710), (1520, 53457), (1545, 52592), (1648, 49305), (1730, 46968), (1957, 41520), (2060, 39444), (2076, 39140), (2280, 35638), (2472, 32870), (2595, 31312), (2768, 29355), (3090, 26296), (3287, 24720), (3460, 23484), (3914, 20760), (4120, 19722), (4152, 19570), (4560, 17819), (4944, 16435), (5190, 15656), (5871, 13840), (6180, 13148), (6574, 12360), (6920, 11742), (7828, 10380), (8240, 9861), (8304, 9785)]