25499540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:329

約数の個数: 72

約数和(自身を含む): 60529896

約数和(自身を除く): 35030356

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 121, 164, 205, 220, 242, 257, 410, 451, 484, 514, 605, 820, 902, 1028, 1210, 1285, 1804, 2255, 2420, 2570, 2827, 4510, 4961, 5140, 5654, 9020, 9922, 10537, 11308, 14135, 19844, 21074, 24805, 28270, 31097, 42148, 49610, 52685, 56540, 62194, 99220, 105370, 115907, 124388, 155485, 210740, 231814, 310970, 463628, 579535, 621940, 1159070, 1274977, 2318140, 2549954, 5099908, 6374885, 12749770, 25499540]

約数ペア:

[(1, 25499540), (2, 12749770), (4, 6374885), (5, 5099908), (10, 2549954), (11, 2318140), (20, 1274977), (22, 1159070), (41, 621940), (44, 579535), (55, 463628), (82, 310970), (110, 231814), (121, 210740), (164, 155485), (205, 124388), (220, 115907), (242, 105370), (257, 99220), (410, 62194), (451, 56540), (484, 52685), (514, 49610), (605, 42148), (820, 31097), (902, 28270), (1028, 24805), (1210, 21074), (1285, 19844), (1804, 14135), (2255, 11308), (2420, 10537), (2570, 9922), (2827, 9020), (4510, 5654), (4961, 5140)]