21172892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{9931}}^1$

素因数の和:9989

約数の個数: 24

約数和(自身を含む): 40880112

約数和(自身を除く): 19707220

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 533, 1066, 2132, 9931, 19862, 39724, 129103, 258206, 407171, 516412, 814342, 1628684, 5293223, 10586446, 21172892]

約数ペア:

[(1, 21172892), (2, 10586446), (4, 5293223), (13, 1628684), (26, 814342), (41, 516412), (52, 407171), (82, 258206), (164, 129103), (533, 39724), (1066, 19862), (2132, 9931)]