291374240

素因数分解:

$2^5\times 5^1\times {\mathrm{911}}^1\times {\mathrm{1999}}^1$

素因数の和:2925

約数の個数: 48

約数和(自身を含む): 689472000

約数和(自身を除く): 398097760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 911, 1822, 1999, 3644, 3998, 4555, 7288, 7996, 9110, 9995, 14576, 15992, 18220, 19990, 29152, 31984, 36440, 39980, 63968, 72880, 79960, 145760, 159920, 319840, 1821089, 3642178, 7284356, 9105445, 14568712, 18210890, 29137424, 36421780, 58274848, 72843560, 145687120, 291374240]

約数ペア:

[(1, 291374240), (2, 145687120), (4, 72843560), (5, 58274848), (8, 36421780), (10, 29137424), (16, 18210890), (20, 14568712), (32, 9105445), (40, 7284356), (80, 3642178), (160, 1821089), (911, 319840), (1822, 159920), (1999, 145760), (3644, 79960), (3998, 72880), (4555, 63968), (7288, 39980), (7996, 36440), (9110, 31984), (9995, 29152), (14576, 19990), (15992, 18220)]