7857640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 21751200

約数和(自身を除く): 13893560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 211, 245, 266, 280, 380, 392, 422, 490, 532, 665, 760, 844, 931, 980, 1055, 1064, 1330, 1477, 1688, 1862, 1960, 2110, 2660, 2954, 3724, 4009, 4220, 4655, 5320, 5908, 7385, 7448, 8018, 8440, 9310, 10339, 11816, 14770, 16036, 18620, 20045, 20678, 28063, 29540, 32072, 37240, 40090, 41356, 51695, 56126, 59080, 80180, 82712, 103390, 112252, 140315, 160360, 196441, 206780, 224504, 280630, 392882, 413560, 561260, 785764, 982205, 1122520, 1571528, 1964410, 3928820, 7857640]

約数ペア:

[(1, 7857640), (2, 3928820), (4, 1964410), (5, 1571528), (7, 1122520), (8, 982205), (10, 785764), (14, 561260), (19, 413560), (20, 392882), (28, 280630), (35, 224504), (38, 206780), (40, 196441), (49, 160360), (56, 140315), (70, 112252), (76, 103390), (95, 82712), (98, 80180), (133, 59080), (140, 56126), (152, 51695), (190, 41356), (196, 40090), (211, 37240), (245, 32072), (266, 29540), (280, 28063), (380, 20678), (392, 20045), (422, 18620), (490, 16036), (532, 14770), (665, 11816), (760, 10339), (844, 9310), (931, 8440), (980, 8018), (1055, 7448), (1064, 7385), (1330, 5908), (1477, 5320), (1688, 4655), (1862, 4220), (1960, 4009), (2110, 3724), (2660, 2954)]