28447580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{641}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 68596416

約数和(自身を除く): 40148836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 634, 641, 1268, 1282, 1585, 2219, 2564, 3170, 3205, 4438, 4487, 6340, 6410, 8876, 8974, 11095, 12820, 17948, 22190, 22435, 44380, 44870, 89740, 203197, 406394, 812788, 1015985, 1422379, 2031970, 2844758, 4063940, 5689516, 7111895, 14223790, 28447580]

約数ペア:

[(1, 28447580), (2, 14223790), (4, 7111895), (5, 5689516), (7, 4063940), (10, 2844758), (14, 2031970), (20, 1422379), (28, 1015985), (35, 812788), (70, 406394), (140, 203197), (317, 89740), (634, 44870), (641, 44380), (1268, 22435), (1282, 22190), (1585, 17948), (2219, 12820), (2564, 11095), (3170, 8974), (3205, 8876), (4438, 6410), (4487, 6340)]