128528440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{719}}^1$

素因数の和:880

約数の個数: 64

約数和(自身を含む): 299376000

約数和(自身を除く): 170847560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 109, 164, 205, 218, 328, 410, 436, 545, 719, 820, 872, 1090, 1438, 1640, 2180, 2876, 3595, 4360, 4469, 5752, 7190, 8938, 14380, 17876, 22345, 28760, 29479, 35752, 44690, 58958, 78371, 89380, 117916, 147395, 156742, 178760, 235832, 294790, 313484, 391855, 589580, 626968, 783710, 1179160, 1567420, 3134840, 3213211, 6426422, 12852844, 16066055, 25705688, 32132110, 64264220, 128528440]

約数ペア:

[(1, 128528440), (2, 64264220), (4, 32132110), (5, 25705688), (8, 16066055), (10, 12852844), (20, 6426422), (40, 3213211), (41, 3134840), (82, 1567420), (109, 1179160), (164, 783710), (205, 626968), (218, 589580), (328, 391855), (410, 313484), (436, 294790), (545, 235832), (719, 178760), (820, 156742), (872, 147395), (1090, 117916), (1438, 89380), (1640, 78371), (2180, 58958), (2876, 44690), (3595, 35752), (4360, 29479), (4469, 28760), (5752, 22345), (7190, 17876), (8938, 14380)]