213437780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{1277}}^1$

素因数の和:1484

約数の個数: 48

約数和(自身を含む): 459251856

約数和(自身を除く): 245814076

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 137, 244, 274, 305, 548, 610, 685, 1220, 1277, 1370, 2554, 2740, 5108, 6385, 8357, 12770, 16714, 25540, 33428, 41785, 77897, 83570, 155794, 167140, 174949, 311588, 349898, 389485, 699796, 778970, 874745, 1557940, 1749490, 3498980, 10671889, 21343778, 42687556, 53359445, 106718890, 213437780]

約数ペア:

[(1, 213437780), (2, 106718890), (4, 53359445), (5, 42687556), (10, 21343778), (20, 10671889), (61, 3498980), (122, 1749490), (137, 1557940), (244, 874745), (274, 778970), (305, 699796), (548, 389485), (610, 349898), (685, 311588), (1220, 174949), (1277, 167140), (1370, 155794), (2554, 83570), (2740, 77897), (5108, 41785), (6385, 33428), (8357, 25540), (12770, 16714)]