21103312

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:467

約数の個数: 40

約数和(自身を含む): 42632192

約数和(自身を除く): 21528880

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 157, 248, 271, 314, 496, 542, 628, 1084, 1256, 2168, 2512, 4336, 4867, 8401, 9734, 16802, 19468, 33604, 38936, 42547, 67208, 77872, 85094, 134416, 170188, 340376, 680752, 1318957, 2637914, 5275828, 10551656, 21103312]

約数ペア:

[(1, 21103312), (2, 10551656), (4, 5275828), (8, 2637914), (16, 1318957), (31, 680752), (62, 340376), (124, 170188), (157, 134416), (248, 85094), (271, 77872), (314, 67208), (496, 42547), (542, 38936), (628, 33604), (1084, 19468), (1256, 16802), (2168, 9734), (2512, 8401), (4336, 4867)]