21318984

素因数分解:

$2^3\times 3^3\times {\mathrm{229}}^1\times {\mathrm{431}}^1$

素因数の和:675

約数の個数: 64

約数和(自身を含む): 59616000

約数和(自身を除く): 38297016

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 229, 431, 458, 687, 862, 916, 1293, 1374, 1724, 1832, 2061, 2586, 2748, 3448, 3879, 4122, 5172, 5496, 6183, 7758, 8244, 10344, 11637, 12366, 15516, 16488, 23274, 24732, 31032, 46548, 49464, 93096, 98699, 197398, 296097, 394796, 592194, 789592, 888291, 1184388, 1776582, 2368776, 2664873, 3553164, 5329746, 7106328, 10659492, 21318984]

約数ペア:

[(1, 21318984), (2, 10659492), (3, 7106328), (4, 5329746), (6, 3553164), (8, 2664873), (9, 2368776), (12, 1776582), (18, 1184388), (24, 888291), (27, 789592), (36, 592194), (54, 394796), (72, 296097), (108, 197398), (216, 98699), (229, 93096), (431, 49464), (458, 46548), (687, 31032), (862, 24732), (916, 23274), (1293, 16488), (1374, 15516), (1724, 12366), (1832, 11637), (2061, 10344), (2586, 8244), (2748, 7758), (3448, 6183), (3879, 5496), (4122, 5172)]