12900700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 29998080

約数和(自身を除く): 17097380

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 71, 79, 92, 100, 115, 142, 158, 230, 284, 316, 355, 395, 460, 575, 710, 790, 1150, 1420, 1580, 1633, 1775, 1817, 1975, 2300, 3266, 3550, 3634, 3950, 5609, 6532, 7100, 7268, 7900, 8165, 9085, 11218, 16330, 18170, 22436, 28045, 32660, 36340, 40825, 45425, 56090, 81650, 90850, 112180, 129007, 140225, 163300, 181700, 258014, 280450, 516028, 560900, 645035, 1290070, 2580140, 3225175, 6450350, 12900700]

約数ペア:

[(1, 12900700), (2, 6450350), (4, 3225175), (5, 2580140), (10, 1290070), (20, 645035), (23, 560900), (25, 516028), (46, 280450), (50, 258014), (71, 181700), (79, 163300), (92, 140225), (100, 129007), (115, 112180), (142, 90850), (158, 81650), (230, 56090), (284, 45425), (316, 40825), (355, 36340), (395, 32660), (460, 28045), (575, 22436), (710, 18170), (790, 16330), (1150, 11218), (1420, 9085), (1580, 8165), (1633, 7900), (1775, 7268), (1817, 7100), (1975, 6532), (2300, 5609), (3266, 3950), (3550, 3634)]