28887140

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 62899200

約数和(自身を除く): 34012060

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 316, 389, 395, 470, 778, 790, 940, 1556, 1580, 1945, 3713, 3890, 7426, 7780, 14852, 18283, 18565, 30731, 36566, 37130, 61462, 73132, 74260, 91415, 122924, 153655, 182830, 307310, 365660, 614620, 1444357, 2888714, 5777428, 7221785, 14443570, 28887140]

約数ペア:

[(1, 28887140), (2, 14443570), (4, 7221785), (5, 5777428), (10, 2888714), (20, 1444357), (47, 614620), (79, 365660), (94, 307310), (158, 182830), (188, 153655), (235, 122924), (316, 91415), (389, 74260), (395, 73132), (470, 61462), (778, 37130), (790, 36566), (940, 30731), (1556, 18565), (1580, 18283), (1945, 14852), (3713, 7780), (3890, 7426)]