21723730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 47443968

約数和(自身を除く): 25720238

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 103, 115, 131, 161, 206, 230, 262, 322, 515, 655, 721, 805, 917, 1030, 1310, 1442, 1610, 1834, 2369, 3013, 3605, 4585, 4738, 6026, 7210, 9170, 11845, 13493, 15065, 16583, 21091, 23690, 26986, 30130, 33166, 42182, 67465, 82915, 94451, 105455, 134930, 165830, 188902, 210910, 310339, 472255, 620678, 944510, 1551695, 2172373, 3103390, 4344746, 10861865, 21723730]

約数ペア:

[(1, 21723730), (2, 10861865), (5, 4344746), (7, 3103390), (10, 2172373), (14, 1551695), (23, 944510), (35, 620678), (46, 472255), (70, 310339), (103, 210910), (115, 188902), (131, 165830), (161, 134930), (206, 105455), (230, 94451), (262, 82915), (322, 67465), (515, 42182), (655, 33166), (721, 30130), (805, 26986), (917, 23690), (1030, 21091), (1310, 16583), (1442, 15065), (1610, 13493), (1834, 11845), (2369, 9170), (3013, 7210), (3605, 6026), (4585, 4738)]