81998880

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1229}}^1$

素因数の和:1386

約数の個数: 96

約数和(自身を含む): 260366400

約数和(自身を除く): 178367520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 139, 160, 240, 278, 417, 480, 556, 695, 834, 1112, 1229, 1390, 1668, 2085, 2224, 2458, 2780, 3336, 3687, 4170, 4448, 4916, 5560, 6145, 6672, 7374, 8340, 9832, 11120, 12290, 13344, 14748, 16680, 18435, 19664, 22240, 24580, 29496, 33360, 36870, 39328, 49160, 58992, 66720, 73740, 98320, 117984, 147480, 170831, 196640, 294960, 341662, 512493, 589920, 683324, 854155, 1024986, 1366648, 1708310, 2049972, 2562465, 2733296, 3416620, 4099944, 5124930, 5466592, 6833240, 8199888, 10249860, 13666480, 16399776, 20499720, 27332960, 40999440, 81998880]

約数ペア:

[(1, 81998880), (2, 40999440), (3, 27332960), (4, 20499720), (5, 16399776), (6, 13666480), (8, 10249860), (10, 8199888), (12, 6833240), (15, 5466592), (16, 5124930), (20, 4099944), (24, 3416620), (30, 2733296), (32, 2562465), (40, 2049972), (48, 1708310), (60, 1366648), (80, 1024986), (96, 854155), (120, 683324), (139, 589920), (160, 512493), (240, 341662), (278, 294960), (417, 196640), (480, 170831), (556, 147480), (695, 117984), (834, 98320), (1112, 73740), (1229, 66720), (1390, 58992), (1668, 49160), (2085, 39328), (2224, 36870), (2458, 33360), (2780, 29496), (3336, 24580), (3687, 22240), (4170, 19664), (4448, 18435), (4916, 16680), (5560, 14748), (6145, 13344), (6672, 12290), (7374, 11120), (8340, 9832)]