28248920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{433}}^1$

素因数の和:684

約数の個数: 64

約数和(自身を含む): 73120320

約数和(自身を除く): 44871400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 233, 280, 433, 466, 866, 932, 1165, 1631, 1732, 1864, 2165, 2330, 3031, 3262, 3464, 4330, 4660, 6062, 6524, 8155, 8660, 9320, 12124, 13048, 15155, 16310, 17320, 24248, 30310, 32620, 60620, 65240, 100889, 121240, 201778, 403556, 504445, 706223, 807112, 1008890, 1412446, 2017780, 2824892, 3531115, 4035560, 5649784, 7062230, 14124460, 28248920]

約数ペア:

[(1, 28248920), (2, 14124460), (4, 7062230), (5, 5649784), (7, 4035560), (8, 3531115), (10, 2824892), (14, 2017780), (20, 1412446), (28, 1008890), (35, 807112), (40, 706223), (56, 504445), (70, 403556), (140, 201778), (233, 121240), (280, 100889), (433, 65240), (466, 60620), (866, 32620), (932, 30310), (1165, 24248), (1631, 17320), (1732, 16310), (1864, 15155), (2165, 13048), (2330, 12124), (3031, 9320), (3262, 8660), (3464, 8155), (4330, 6524), (4660, 6062)]