20516320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11657}}^1$

素因数の和:11683

約数の個数: 48

約数和(自身を含む): 52880688

約数和(自身を除く): 32364368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11657, 23314, 46628, 58285, 93256, 116570, 128227, 186512, 233140, 256454, 373024, 466280, 512908, 641135, 932560, 1025816, 1282270, 1865120, 2051632, 2564540, 4103264, 5129080, 10258160, 20516320]

約数ペア:

[(1, 20516320), (2, 10258160), (4, 5129080), (5, 4103264), (8, 2564540), (10, 2051632), (11, 1865120), (16, 1282270), (20, 1025816), (22, 932560), (32, 641135), (40, 512908), (44, 466280), (55, 373024), (80, 256454), (88, 233140), (110, 186512), (160, 128227), (176, 116570), (220, 93256), (352, 58285), (440, 46628), (880, 23314), (1760, 11657)]