168591020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1609}}^1$

素因数の和:1675

約数の個数: 72

約数和(自身を含む): 395982720

約数和(自身を除く): 227391700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 620, 676, 806, 845, 1609, 1612, 1690, 2015, 3218, 3380, 4030, 5239, 6436, 8045, 8060, 10478, 16090, 20917, 20956, 26195, 32180, 41834, 49879, 52390, 83668, 99758, 104585, 104780, 199516, 209170, 249395, 271921, 418340, 498790, 543842, 648427, 997580, 1087684, 1296854, 1359605, 2593708, 2719210, 3242135, 5438420, 6484270, 8429551, 12968540, 16859102, 33718204, 42147755, 84295510, 168591020]

約数ペア:

[(1, 168591020), (2, 84295510), (4, 42147755), (5, 33718204), (10, 16859102), (13, 12968540), (20, 8429551), (26, 6484270), (31, 5438420), (52, 3242135), (62, 2719210), (65, 2593708), (124, 1359605), (130, 1296854), (155, 1087684), (169, 997580), (260, 648427), (310, 543842), (338, 498790), (403, 418340), (620, 271921), (676, 249395), (806, 209170), (845, 199516), (1609, 104780), (1612, 104585), (1690, 99758), (2015, 83668), (3218, 52390), (3380, 49879), (4030, 41834), (5239, 32180), (6436, 26195), (8045, 20956), (8060, 20917), (10478, 16090)]