20772015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{131}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 37749888

約数和(自身を除く): 16977873

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 131, 155, 165, 341, 393, 465, 655, 961, 1023, 1441, 1705, 1965, 2883, 4061, 4323, 4805, 5115, 7205, 10571, 12183, 14415, 20305, 21615, 31713, 44671, 52855, 60915, 125891, 134013, 158565, 223355, 377673, 629455, 670065, 1384801, 1888365, 4154403, 6924005, 20772015]

約数ペア:

[(1, 20772015), (3, 6924005), (5, 4154403), (11, 1888365), (15, 1384801), (31, 670065), (33, 629455), (55, 377673), (93, 223355), (131, 158565), (155, 134013), (165, 125891), (341, 60915), (393, 52855), (465, 44671), (655, 31713), (961, 21615), (1023, 20305), (1441, 14415), (1705, 12183), (1965, 10571), (2883, 7205), (4061, 5115), (4323, 4805)]