19893568

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:351

約数の個数: 56

約数和(自身を含む): 42005504

約数和(自身を除く): 22111936

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 64, 74, 124, 148, 248, 271, 296, 496, 542, 592, 992, 1084, 1147, 1184, 1984, 2168, 2294, 2368, 4336, 4588, 8401, 8672, 9176, 10027, 16802, 17344, 18352, 20054, 33604, 36704, 40108, 67208, 73408, 80216, 134416, 160432, 268832, 310837, 320864, 537664, 621674, 641728, 1243348, 2486696, 4973392, 9946784, 19893568]

約数ペア:

[(1, 19893568), (2, 9946784), (4, 4973392), (8, 2486696), (16, 1243348), (31, 641728), (32, 621674), (37, 537664), (62, 320864), (64, 310837), (74, 268832), (124, 160432), (148, 134416), (248, 80216), (271, 73408), (296, 67208), (496, 40108), (542, 36704), (592, 33604), (992, 20054), (1084, 18352), (1147, 17344), (1184, 16802), (1984, 10027), (2168, 9176), (2294, 8672), (2368, 8401), (4336, 4588)]