20431060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 26138540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 179, 260, 358, 439, 716, 878, 895, 1756, 1790, 2195, 2327, 3580, 4390, 4654, 5707, 8780, 9308, 11414, 11635, 22828, 23270, 28535, 46540, 57070, 78581, 114140, 157162, 314324, 392905, 785810, 1021553, 1571620, 2043106, 4086212, 5107765, 10215530, 20431060]

約数ペア:

[(1, 20431060), (2, 10215530), (4, 5107765), (5, 4086212), (10, 2043106), (13, 1571620), (20, 1021553), (26, 785810), (52, 392905), (65, 314324), (130, 157162), (179, 114140), (260, 78581), (358, 57070), (439, 46540), (716, 28535), (878, 23270), (895, 22828), (1756, 11635), (1790, 11414), (2195, 9308), (2327, 8780), (3580, 5707), (4390, 4654)]