81168380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:339

約数の個数: 96

約数和(自身を含む): 193052160

約数和(自身を除く): 111883780

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 37, 38, 46, 74, 76, 92, 95, 115, 148, 185, 190, 230, 251, 370, 380, 437, 460, 502, 703, 740, 851, 874, 1004, 1255, 1406, 1702, 1748, 2185, 2510, 2812, 3404, 3515, 4255, 4370, 4769, 5020, 5773, 7030, 8510, 8740, 9287, 9538, 11546, 14060, 16169, 17020, 18574, 19076, 23092, 23845, 28865, 32338, 37148, 46435, 47690, 57730, 64676, 80845, 92870, 95380, 109687, 115460, 161690, 176453, 185740, 213601, 219374, 323380, 352906, 427202, 438748, 548435, 705812, 854404, 882265, 1068005, 1096870, 1764530, 2136010, 2193740, 3529060, 4058419, 4272020, 8116838, 16233676, 20292095, 40584190, 81168380]

約数ペア:

[(1, 81168380), (2, 40584190), (4, 20292095), (5, 16233676), (10, 8116838), (19, 4272020), (20, 4058419), (23, 3529060), (37, 2193740), (38, 2136010), (46, 1764530), (74, 1096870), (76, 1068005), (92, 882265), (95, 854404), (115, 705812), (148, 548435), (185, 438748), (190, 427202), (230, 352906), (251, 323380), (370, 219374), (380, 213601), (437, 185740), (460, 176453), (502, 161690), (703, 115460), (740, 109687), (851, 95380), (874, 92870), (1004, 80845), (1255, 64676), (1406, 57730), (1702, 47690), (1748, 46435), (2185, 37148), (2510, 32338), (2812, 28865), (3404, 23845), (3515, 23092), (4255, 19076), (4370, 18574), (4769, 17020), (5020, 16169), (5773, 14060), (7030, 11546), (8510, 9538), (8740, 9287)]