21399264

素因数分解:

$2^5\times 3^2\times {\mathrm{67}}^1\times {\mathrm{1109}}^1$

素因数の和:1192

約数の個数: 72

約数和(自身を含む): 61818120

約数和(自身を除く): 40418856

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 67, 72, 96, 134, 144, 201, 268, 288, 402, 536, 603, 804, 1072, 1109, 1206, 1608, 2144, 2218, 2412, 3216, 3327, 4436, 4824, 6432, 6654, 8872, 9648, 9981, 13308, 17744, 19296, 19962, 26616, 35488, 39924, 53232, 74303, 79848, 106464, 148606, 159696, 222909, 297212, 319392, 445818, 594424, 668727, 891636, 1188848, 1337454, 1783272, 2377696, 2674908, 3566544, 5349816, 7133088, 10699632, 21399264]

約数ペア:

[(1, 21399264), (2, 10699632), (3, 7133088), (4, 5349816), (6, 3566544), (8, 2674908), (9, 2377696), (12, 1783272), (16, 1337454), (18, 1188848), (24, 891636), (32, 668727), (36, 594424), (48, 445818), (67, 319392), (72, 297212), (96, 222909), (134, 159696), (144, 148606), (201, 106464), (268, 79848), (288, 74303), (402, 53232), (536, 39924), (603, 35488), (804, 26616), (1072, 19962), (1109, 19296), (1206, 17744), (1608, 13308), (2144, 9981), (2218, 9648), (2412, 8872), (3216, 6654), (3327, 6432), (4436, 4824)]