21164256

素因数分解:

$2^5\times 3^2\times {\mathrm{43}}^1\times {\mathrm{1709}}^1$

素因数の和:1768

約数の個数: 72

約数和(自身を含む): 61621560

約数和(自身を除く): 40457304

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 43, 48, 72, 86, 96, 129, 144, 172, 258, 288, 344, 387, 516, 688, 774, 1032, 1376, 1548, 1709, 2064, 3096, 3418, 4128, 5127, 6192, 6836, 10254, 12384, 13672, 15381, 20508, 27344, 30762, 41016, 54688, 61524, 73487, 82032, 123048, 146974, 164064, 220461, 246096, 293948, 440922, 492192, 587896, 661383, 881844, 1175792, 1322766, 1763688, 2351584, 2645532, 3527376, 5291064, 7054752, 10582128, 21164256]

約数ペア:

[(1, 21164256), (2, 10582128), (3, 7054752), (4, 5291064), (6, 3527376), (8, 2645532), (9, 2351584), (12, 1763688), (16, 1322766), (18, 1175792), (24, 881844), (32, 661383), (36, 587896), (43, 492192), (48, 440922), (72, 293948), (86, 246096), (96, 220461), (129, 164064), (144, 146974), (172, 123048), (258, 82032), (288, 73487), (344, 61524), (387, 54688), (516, 41016), (688, 30762), (774, 27344), (1032, 20508), (1376, 15381), (1548, 13672), (1709, 12384), (2064, 10254), (3096, 6836), (3418, 6192), (4128, 5127)]