21125130

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54167}}^1$

素因数の和:54190

約数の個数: 32

約数和(自身を含む): 54601344

約数和(自身を除く): 33476214

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54167, 108334, 162501, 270835, 325002, 541670, 704171, 812505, 1408342, 1625010, 2112513, 3520855, 4225026, 7041710, 10562565, 21125130]

約数ペア:

[(1, 21125130), (2, 10562565), (3, 7041710), (5, 4225026), (6, 3520855), (10, 2112513), (13, 1625010), (15, 1408342), (26, 812505), (30, 704171), (39, 541670), (65, 325002), (78, 270835), (130, 162501), (195, 108334), (390, 54167)]