20758144

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:689

約数の個数: 64

約数和(自身を含む): 47148480

約数和(自身を除く): 26390336

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 32, 44, 46, 64, 88, 92, 128, 176, 184, 253, 352, 368, 506, 641, 704, 736, 1012, 1282, 1408, 1472, 2024, 2564, 2944, 4048, 5128, 7051, 8096, 10256, 14102, 14743, 16192, 20512, 28204, 29486, 32384, 41024, 56408, 58972, 82048, 112816, 117944, 162173, 225632, 235888, 324346, 451264, 471776, 648692, 902528, 943552, 1297384, 1887104, 2594768, 5189536, 10379072, 20758144]

約数ペア:

[(1, 20758144), (2, 10379072), (4, 5189536), (8, 2594768), (11, 1887104), (16, 1297384), (22, 943552), (23, 902528), (32, 648692), (44, 471776), (46, 451264), (64, 324346), (88, 235888), (92, 225632), (128, 162173), (176, 117944), (184, 112816), (253, 82048), (352, 58972), (368, 56408), (506, 41024), (641, 32384), (704, 29486), (736, 28204), (1012, 20512), (1282, 16192), (1408, 14743), (1472, 14102), (2024, 10256), (2564, 8096), (2944, 7051), (4048, 5128)]