20693385

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 37711440

約数和(自身を除く): 17018055

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 101, 145, 157, 261, 303, 435, 471, 505, 785, 909, 1305, 1413, 1515, 2355, 2929, 4545, 4553, 7065, 8787, 13659, 14645, 15857, 22765, 26361, 40977, 43935, 47571, 68295, 79285, 131805, 142713, 204885, 237855, 459853, 713565, 1379559, 2299265, 4138677, 6897795, 20693385]

約数ペア:

[(1, 20693385), (3, 6897795), (5, 4138677), (9, 2299265), (15, 1379559), (29, 713565), (45, 459853), (87, 237855), (101, 204885), (145, 142713), (157, 131805), (261, 79285), (303, 68295), (435, 47571), (471, 43935), (505, 40977), (785, 26361), (909, 22765), (1305, 15857), (1413, 14645), (1515, 13659), (2355, 8787), (2929, 7065), (4545, 4553)]