77204780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{839}}^1$

素因数の和:998

約数の個数: 48

約数和(自身を含む): 167650560

約数和(自身を除く): 90445780

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 107, 172, 214, 215, 428, 430, 535, 839, 860, 1070, 1678, 2140, 3356, 4195, 4601, 8390, 9202, 16780, 18404, 23005, 36077, 46010, 72154, 89773, 92020, 144308, 179546, 180385, 359092, 360770, 448865, 721540, 897730, 1795460, 3860239, 7720478, 15440956, 19301195, 38602390, 77204780]

約数ペア:

[(1, 77204780), (2, 38602390), (4, 19301195), (5, 15440956), (10, 7720478), (20, 3860239), (43, 1795460), (86, 897730), (107, 721540), (172, 448865), (214, 360770), (215, 359092), (428, 180385), (430, 179546), (535, 144308), (839, 92020), (860, 89773), (1070, 72154), (1678, 46010), (2140, 36077), (3356, 23005), (4195, 18404), (4601, 16780), (8390, 9202)]