81900840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97501}}^1$

素因数の和:97522

約数の個数: 64

約数和(自身を含む): 280805760

約数和(自身を除く): 198904920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 97501, 195002, 292503, 390004, 487505, 585006, 682507, 780008, 975010, 1170012, 1365014, 1462515, 1950020, 2047521, 2340024, 2730028, 2925030, 3412535, 3900040, 4095042, 5460056, 5850060, 6825070, 8190084, 10237605, 11700120, 13650140, 16380168, 20475210, 27300280, 40950420, 81900840]

約数ペア:

[(1, 81900840), (2, 40950420), (3, 27300280), (4, 20475210), (5, 16380168), (6, 13650140), (7, 11700120), (8, 10237605), (10, 8190084), (12, 6825070), (14, 5850060), (15, 5460056), (20, 4095042), (21, 3900040), (24, 3412535), (28, 2925030), (30, 2730028), (35, 2340024), (40, 2047521), (42, 1950020), (56, 1462515), (60, 1365014), (70, 1170012), (84, 975010), (105, 780008), (120, 682507), (140, 585006), (168, 487505), (210, 390004), (280, 292503), (420, 195002), (840, 97501)]