21190730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 42632352

約数和(自身を除く): 21441622

約数列:

[1, 2, 5, 10, 11, 22, 55, 83, 110, 121, 166, 211, 242, 415, 422, 605, 830, 913, 1055, 1210, 1826, 2110, 2321, 4565, 4642, 9130, 10043, 11605, 17513, 20086, 23210, 25531, 35026, 50215, 51062, 87565, 100430, 127655, 175130, 192643, 255310, 385286, 963215, 1926430, 2119073, 4238146, 10595365, 21190730]

約数ペア:

[(1, 21190730), (2, 10595365), (5, 4238146), (10, 2119073), (11, 1926430), (22, 963215), (55, 385286), (83, 255310), (110, 192643), (121, 175130), (166, 127655), (211, 100430), (242, 87565), (415, 51062), (422, 50215), (605, 35026), (830, 25531), (913, 23210), (1055, 20086), (1210, 17513), (1826, 11605), (2110, 10043), (2321, 9130), (4565, 4642)]