21156768

素因数分解:

$2^5\times 3^3\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:587

約数の個数: 96

約数和(自身を含む): 63141120

約数和(自身を除く): 41984352

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 47, 48, 54, 72, 94, 96, 108, 141, 144, 188, 216, 282, 288, 376, 423, 432, 521, 564, 752, 846, 864, 1042, 1128, 1269, 1504, 1563, 1692, 2084, 2256, 2538, 3126, 3384, 4168, 4512, 4689, 5076, 6252, 6768, 8336, 9378, 10152, 12504, 13536, 14067, 16672, 18756, 20304, 24487, 25008, 28134, 37512, 40608, 48974, 50016, 56268, 73461, 75024, 97948, 112536, 146922, 150048, 195896, 220383, 225072, 293844, 391792, 440766, 450144, 587688, 661149, 783584, 881532, 1175376, 1322298, 1763064, 2350752, 2644596, 3526128, 5289192, 7052256, 10578384, 21156768]

約数ペア:

[(1, 21156768), (2, 10578384), (3, 7052256), (4, 5289192), (6, 3526128), (8, 2644596), (9, 2350752), (12, 1763064), (16, 1322298), (18, 1175376), (24, 881532), (27, 783584), (32, 661149), (36, 587688), (47, 450144), (48, 440766), (54, 391792), (72, 293844), (94, 225072), (96, 220383), (108, 195896), (141, 150048), (144, 146922), (188, 112536), (216, 97948), (282, 75024), (288, 73461), (376, 56268), (423, 50016), (432, 48974), (521, 40608), (564, 37512), (752, 28134), (846, 25008), (864, 24487), (1042, 20304), (1128, 18756), (1269, 16672), (1504, 14067), (1563, 13536), (1692, 12504), (2084, 10152), (2256, 9378), (2538, 8336), (3126, 6768), (3384, 6252), (4168, 5076), (4512, 4689)]