21398556

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 55996416

約数和(自身を除く): 34597860

約数列:

[1, 2, 3, 4, 6, 12, 23, 31, 41, 46, 61, 62, 69, 82, 92, 93, 122, 123, 124, 138, 164, 183, 186, 244, 246, 276, 366, 372, 492, 713, 732, 943, 1271, 1403, 1426, 1886, 1891, 2139, 2501, 2542, 2806, 2829, 2852, 3772, 3782, 3813, 4209, 4278, 5002, 5084, 5612, 5658, 5673, 7503, 7564, 7626, 8418, 8556, 10004, 11316, 11346, 15006, 15252, 16836, 22692, 29233, 30012, 43493, 57523, 58466, 77531, 86986, 87699, 115046, 116932, 130479, 155062, 172569, 173972, 175398, 230092, 232593, 260958, 310124, 345138, 350796, 465186, 521916, 690276, 930372, 1783213, 3566426, 5349639, 7132852, 10699278, 21398556]

約数ペア:

[(1, 21398556), (2, 10699278), (3, 7132852), (4, 5349639), (6, 3566426), (12, 1783213), (23, 930372), (31, 690276), (41, 521916), (46, 465186), (61, 350796), (62, 345138), (69, 310124), (82, 260958), (92, 232593), (93, 230092), (122, 175398), (123, 173972), (124, 172569), (138, 155062), (164, 130479), (183, 116932), (186, 115046), (244, 87699), (246, 86986), (276, 77531), (366, 58466), (372, 57523), (492, 43493), (713, 30012), (732, 29233), (943, 22692), (1271, 16836), (1403, 15252), (1426, 15006), (1886, 11346), (1891, 11316), (2139, 10004), (2501, 8556), (2542, 8418), (2806, 7626), (2829, 7564), (2852, 7503), (3772, 5673), (3782, 5658), (3813, 5612), (4209, 5084), (4278, 5002)]