77579980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{797}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 169456896

約数和(自身を除く): 91876916

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 785, 797, 1570, 1594, 3140, 3188, 3985, 4867, 7970, 9734, 15940, 19468, 24335, 24707, 48670, 49414, 97340, 98828, 123535, 125129, 247070, 250258, 494140, 500516, 625645, 1251290, 2502580, 3878999, 7757998, 15515996, 19394995, 38789990, 77579980]

約数ペア:

[(1, 77579980), (2, 38789990), (4, 19394995), (5, 15515996), (10, 7757998), (20, 3878999), (31, 2502580), (62, 1251290), (124, 625645), (155, 500516), (157, 494140), (310, 250258), (314, 247070), (620, 125129), (628, 123535), (785, 98828), (797, 97340), (1570, 49414), (1594, 48670), (3140, 24707), (3188, 24335), (3985, 19468), (4867, 15940), (7970, 9734)]