18808587

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 32617728

約数和(自身を除く): 13809141

約数列:

[1, 3, 7, 9, 21, 43, 53, 63, 129, 131, 159, 301, 371, 387, 393, 477, 903, 917, 1113, 1179, 2279, 2709, 2751, 3339, 5633, 6837, 6943, 8253, 15953, 16899, 20511, 20829, 39431, 47859, 48601, 50697, 62487, 118293, 143577, 145803, 298549, 354879, 437409, 895647, 2089843, 2686941, 6269529, 18808587]

約数ペア:

[(1, 18808587), (3, 6269529), (7, 2686941), (9, 2089843), (21, 895647), (43, 437409), (53, 354879), (63, 298549), (129, 145803), (131, 143577), (159, 118293), (301, 62487), (371, 50697), (387, 48601), (393, 47859), (477, 39431), (903, 20829), (917, 20511), (1113, 16899), (1179, 15953), (2279, 8253), (2709, 6943), (2751, 6837), (3339, 5633)]