20669870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 43352064

約数和(自身を除く): 22682194

約数列:

[1, 2, 5, 10, 13, 23, 26, 31, 46, 62, 65, 115, 130, 155, 223, 230, 299, 310, 403, 446, 598, 713, 806, 1115, 1426, 1495, 2015, 2230, 2899, 2990, 3565, 4030, 5129, 5798, 6913, 7130, 9269, 10258, 13826, 14495, 18538, 25645, 28990, 34565, 46345, 51290, 66677, 69130, 89869, 92690, 133354, 158999, 179738, 317998, 333385, 449345, 666770, 794995, 898690, 1589990, 2066987, 4133974, 10334935, 20669870]

約数ペア:

[(1, 20669870), (2, 10334935), (5, 4133974), (10, 2066987), (13, 1589990), (23, 898690), (26, 794995), (31, 666770), (46, 449345), (62, 333385), (65, 317998), (115, 179738), (130, 158999), (155, 133354), (223, 92690), (230, 89869), (299, 69130), (310, 66677), (403, 51290), (446, 46345), (598, 34565), (713, 28990), (806, 25645), (1115, 18538), (1426, 14495), (1495, 13826), (2015, 10258), (2230, 9269), (2899, 7130), (2990, 6913), (3565, 5798), (4030, 5129)]