18219916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{601}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 38229408

約数和(自身を除く): 20009492

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 106, 143, 212, 286, 572, 583, 601, 689, 1166, 1202, 1378, 2332, 2404, 2756, 6611, 7579, 7813, 13222, 15158, 15626, 26444, 30316, 31252, 31853, 63706, 85943, 127412, 171886, 343772, 350383, 414089, 700766, 828178, 1401532, 1656356, 4554979, 9109958, 18219916]

約数ペア:

[(1, 18219916), (2, 9109958), (4, 4554979), (11, 1656356), (13, 1401532), (22, 828178), (26, 700766), (44, 414089), (52, 350383), (53, 343772), (106, 171886), (143, 127412), (212, 85943), (286, 63706), (572, 31853), (583, 31252), (601, 30316), (689, 26444), (1166, 15626), (1202, 15158), (1378, 13222), (2332, 7813), (2404, 7579), (2756, 6611)]