21220368

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1097}}^1$

素因数の和:1152

約数の個数: 80

約数和(自身を含む): 60996096

約数和(自身を除く): 39775728

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 39, 48, 52, 62, 78, 93, 104, 124, 156, 186, 208, 248, 312, 372, 403, 496, 624, 744, 806, 1097, 1209, 1488, 1612, 2194, 2418, 3224, 3291, 4388, 4836, 6448, 6582, 8776, 9672, 13164, 14261, 17552, 19344, 26328, 28522, 34007, 42783, 52656, 57044, 68014, 85566, 102021, 114088, 136028, 171132, 204042, 228176, 272056, 342264, 408084, 442091, 544112, 684528, 816168, 884182, 1326273, 1632336, 1768364, 2652546, 3536728, 5305092, 7073456, 10610184, 21220368]

約数ペア:

[(1, 21220368), (2, 10610184), (3, 7073456), (4, 5305092), (6, 3536728), (8, 2652546), (12, 1768364), (13, 1632336), (16, 1326273), (24, 884182), (26, 816168), (31, 684528), (39, 544112), (48, 442091), (52, 408084), (62, 342264), (78, 272056), (93, 228176), (104, 204042), (124, 171132), (156, 136028), (186, 114088), (208, 102021), (248, 85566), (312, 68014), (372, 57044), (403, 52656), (496, 42783), (624, 34007), (744, 28522), (806, 26328), (1097, 19344), (1209, 17552), (1488, 14261), (1612, 13164), (2194, 9672), (2418, 8776), (3224, 6582), (3291, 6448), (4388, 4836)]