408775968

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{19991}}^1$

素因数の和:20078

約数の個数: 72

約数和(自身を含む): 1178888256

約数和(自身を除く): 770112288

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 142, 144, 213, 284, 288, 426, 568, 639, 852, 1136, 1278, 1704, 2272, 2556, 3408, 5112, 6816, 10224, 19991, 20448, 39982, 59973, 79964, 119946, 159928, 179919, 239892, 319856, 359838, 479784, 639712, 719676, 959568, 1419361, 1439352, 1919136, 2838722, 2878704, 4258083, 5677444, 5757408, 8516166, 11354888, 12774249, 17032332, 22709776, 25548498, 34064664, 45419552, 51096996, 68129328, 102193992, 136258656, 204387984, 408775968]

約数ペア:

[(1, 408775968), (2, 204387984), (3, 136258656), (4, 102193992), (6, 68129328), (8, 51096996), (9, 45419552), (12, 34064664), (16, 25548498), (18, 22709776), (24, 17032332), (32, 12774249), (36, 11354888), (48, 8516166), (71, 5757408), (72, 5677444), (96, 4258083), (142, 2878704), (144, 2838722), (213, 1919136), (284, 1439352), (288, 1419361), (426, 959568), (568, 719676), (639, 639712), (852, 479784), (1136, 359838), (1278, 319856), (1704, 239892), (2272, 179919), (2556, 159928), (3408, 119946), (5112, 79964), (6816, 59973), (10224, 39982), (19991, 20448)]