20347790980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{205991}}^1$

素因数の和:206460

約数の個数: 48

約数和(自身を含む): 46718985600

約数和(自身を除く): 26371194620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 449, 898, 1796, 2245, 4490, 4939, 8980, 9878, 19756, 24695, 49390, 98780, 205991, 411982, 823964, 1029955, 2059910, 2265901, 4119820, 4531802, 9063604, 11329505, 22659010, 45318020, 92489959, 184979918, 369959836, 462449795, 924899590, 1017389549, 1849799180, 2034779098, 4069558196, 5086947745, 10173895490, 20347790980]

約数ペア:

[(1, 20347790980), (2, 10173895490), (4, 5086947745), (5, 4069558196), (10, 2034779098), (11, 1849799180), (20, 1017389549), (22, 924899590), (44, 462449795), (55, 369959836), (110, 184979918), (220, 92489959), (449, 45318020), (898, 22659010), (1796, 11329505), (2245, 9063604), (4490, 4531802), (4939, 4119820), (8980, 2265901), (9878, 2059910), (19756, 1029955), (24695, 823964), (49390, 411982), (98780, 205991)]