21979184

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:453

約数の個数: 40

約数和(自身を含む): 44217408

約数和(自身を除く): 22238224

約数列:

[1, 2, 4, 8, 16, 37, 74, 137, 148, 271, 274, 296, 542, 548, 592, 1084, 1096, 2168, 2192, 4336, 5069, 10027, 10138, 20054, 20276, 37127, 40108, 40552, 74254, 80216, 81104, 148508, 160432, 297016, 594032, 1373699, 2747398, 5494796, 10989592, 21979184]

約数ペア:

[(1, 21979184), (2, 10989592), (4, 5494796), (8, 2747398), (16, 1373699), (37, 594032), (74, 297016), (137, 160432), (148, 148508), (271, 81104), (274, 80216), (296, 74254), (542, 40552), (548, 40108), (592, 37127), (1084, 20276), (1096, 20054), (2168, 10138), (2192, 10027), (4336, 5069)]