84801980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 181560960

約数和(自身を除く): 96758980

約数列:

[1, 2, 4, 5, 10, 20, 113, 157, 226, 239, 314, 452, 478, 565, 628, 785, 956, 1130, 1195, 1570, 2260, 2390, 3140, 4780, 17741, 27007, 35482, 37523, 54014, 70964, 75046, 88705, 108028, 135035, 150092, 177410, 187615, 270070, 354820, 375230, 540140, 750460, 4240099, 8480198, 16960396, 21200495, 42400990, 84801980]

約数ペア:

[(1, 84801980), (2, 42400990), (4, 21200495), (5, 16960396), (10, 8480198), (20, 4240099), (113, 750460), (157, 540140), (226, 375230), (239, 354820), (314, 270070), (452, 187615), (478, 177410), (565, 150092), (628, 135035), (785, 108028), (956, 88705), (1130, 75046), (1195, 70964), (1570, 54014), (2260, 37523), (2390, 35482), (3140, 27007), (4780, 17741)]