311924720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1559}}^1$

素因数の和:1674

約数の個数: 80

約数和(自身を含む): 755576640

約数和(自身を除く): 443651920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 61, 80, 82, 122, 164, 205, 244, 305, 328, 410, 488, 610, 656, 820, 976, 1220, 1559, 1640, 2440, 2501, 3118, 3280, 4880, 5002, 6236, 7795, 10004, 12472, 12505, 15590, 20008, 24944, 25010, 31180, 40016, 50020, 62360, 63919, 95099, 100040, 124720, 127838, 190198, 200080, 255676, 319595, 380396, 475495, 511352, 639190, 760792, 950990, 1022704, 1278380, 1521584, 1901980, 2556760, 3803960, 3899059, 5113520, 7607920, 7798118, 15596236, 19495295, 31192472, 38990590, 62384944, 77981180, 155962360, 311924720]

約数ペア:

[(1, 311924720), (2, 155962360), (4, 77981180), (5, 62384944), (8, 38990590), (10, 31192472), (16, 19495295), (20, 15596236), (40, 7798118), (41, 7607920), (61, 5113520), (80, 3899059), (82, 3803960), (122, 2556760), (164, 1901980), (205, 1521584), (244, 1278380), (305, 1022704), (328, 950990), (410, 760792), (488, 639190), (610, 511352), (656, 475495), (820, 380396), (976, 319595), (1220, 255676), (1559, 200080), (1640, 190198), (2440, 127838), (2501, 124720), (3118, 100040), (3280, 95099), (4880, 63919), (5002, 62360), (6236, 50020), (7795, 40016), (10004, 31180), (12472, 25010), (12505, 24944), (15590, 20008)]