28778328

素因数分解:

$2^3\times 3^4\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:606

約数の個数: 80

約数和(自身を含む): 81675000

約数和(自身を除く): 52896672

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 89, 108, 162, 178, 216, 267, 324, 356, 499, 534, 648, 712, 801, 998, 1068, 1497, 1602, 1996, 2136, 2403, 2994, 3204, 3992, 4491, 4806, 5988, 6408, 7209, 8982, 9612, 11976, 13473, 14418, 17964, 19224, 26946, 28836, 35928, 40419, 44411, 53892, 57672, 80838, 88822, 107784, 133233, 161676, 177644, 266466, 323352, 355288, 399699, 532932, 799398, 1065864, 1199097, 1598796, 2398194, 3197592, 3597291, 4796388, 7194582, 9592776, 14389164, 28778328]

約数ペア:

[(1, 28778328), (2, 14389164), (3, 9592776), (4, 7194582), (6, 4796388), (8, 3597291), (9, 3197592), (12, 2398194), (18, 1598796), (24, 1199097), (27, 1065864), (36, 799398), (54, 532932), (72, 399699), (81, 355288), (89, 323352), (108, 266466), (162, 177644), (178, 161676), (216, 133233), (267, 107784), (324, 88822), (356, 80838), (499, 57672), (534, 53892), (648, 44411), (712, 40419), (801, 35928), (998, 28836), (1068, 26946), (1497, 19224), (1602, 17964), (1996, 14418), (2136, 13473), (2403, 11976), (2994, 9612), (3204, 8982), (3992, 7209), (4491, 6408), (4806, 5988)]