21333456

素因数分解:

$2^4\times 3^6\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:116

約数の個数: 140

約数和(自身を含む): 65055360

約数和(自身を除く): 43721904

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 48, 54, 59, 62, 72, 81, 93, 108, 118, 124, 144, 162, 177, 186, 216, 236, 243, 248, 279, 324, 354, 372, 432, 472, 486, 496, 531, 558, 648, 708, 729, 744, 837, 944, 972, 1062, 1116, 1296, 1416, 1458, 1488, 1593, 1674, 1829, 1944, 2124, 2232, 2511, 2832, 2916, 3186, 3348, 3658, 3888, 4248, 4464, 4779, 5022, 5487, 5832, 6372, 6696, 7316, 7533, 8496, 9558, 10044, 10974, 11664, 12744, 13392, 14337, 14632, 15066, 16461, 19116, 20088, 21948, 22599, 25488, 28674, 29264, 30132, 32922, 38232, 40176, 43011, 43896, 45198, 49383, 57348, 60264, 65844, 76464, 86022, 87792, 90396, 98766, 114696, 120528, 131688, 148149, 172044, 180792, 197532, 229392, 263376, 296298, 344088, 361584, 395064, 444447, 592596, 688176, 790128, 888894, 1185192, 1333341, 1777788, 2370384, 2666682, 3555576, 5333364, 7111152, 10666728, 21333456]

約数ペア:

[(1, 21333456), (2, 10666728), (3, 7111152), (4, 5333364), (6, 3555576), (8, 2666682), (9, 2370384), (12, 1777788), (16, 1333341), (18, 1185192), (24, 888894), (27, 790128), (31, 688176), (36, 592596), (48, 444447), (54, 395064), (59, 361584), (62, 344088), (72, 296298), (81, 263376), (93, 229392), (108, 197532), (118, 180792), (124, 172044), (144, 148149), (162, 131688), (177, 120528), (186, 114696), (216, 98766), (236, 90396), (243, 87792), (248, 86022), (279, 76464), (324, 65844), (354, 60264), (372, 57348), (432, 49383), (472, 45198), (486, 43896), (496, 43011), (531, 40176), (558, 38232), (648, 32922), (708, 30132), (729, 29264), (744, 28674), (837, 25488), (944, 22599), (972, 21948), (1062, 20088), (1116, 19116), (1296, 16461), (1416, 15066), (1458, 14632), (1488, 14337), (1593, 13392), (1674, 12744), (1829, 11664), (1944, 10974), (2124, 10044), (2232, 9558), (2511, 8496), (2832, 7533), (2916, 7316), (3186, 6696), (3348, 6372), (3658, 5832), (3888, 5487), (4248, 5022), (4464, 4779)]