81651780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21601}}^1$

素因数の和:21626

約数の個数: 96

約数和(自身を含む): 290330880

約数和(自身を除く): 208679100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21601, 43202, 64803, 86404, 108005, 129606, 151207, 194409, 216010, 259212, 302414, 324015, 388818, 432020, 453621, 583227, 604828, 648030, 756035, 777636, 907242, 972045, 1166454, 1296060, 1360863, 1512070, 1814484, 1944090, 2268105, 2332908, 2721726, 2916135, 3024140, 3888180, 4082589, 4536210, 5443452, 5832270, 6804315, 8165178, 9072420, 11664540, 13608630, 16330356, 20412945, 27217260, 40825890, 81651780]

約数ペア:

[(1, 81651780), (2, 40825890), (3, 27217260), (4, 20412945), (5, 16330356), (6, 13608630), (7, 11664540), (9, 9072420), (10, 8165178), (12, 6804315), (14, 5832270), (15, 5443452), (18, 4536210), (20, 4082589), (21, 3888180), (27, 3024140), (28, 2916135), (30, 2721726), (35, 2332908), (36, 2268105), (42, 1944090), (45, 1814484), (54, 1512070), (60, 1360863), (63, 1296060), (70, 1166454), (84, 972045), (90, 907242), (105, 777636), (108, 756035), (126, 648030), (135, 604828), (140, 583227), (180, 453621), (189, 432020), (210, 388818), (252, 324015), (270, 302414), (315, 259212), (378, 216010), (420, 194409), (540, 151207), (630, 129606), (756, 108005), (945, 86404), (1260, 64803), (1890, 43202), (3780, 21601)]