18686703

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 10730769

約数列:

[1, 3, 7, 21, 71, 83, 151, 213, 249, 453, 497, 581, 1057, 1491, 1743, 3171, 5893, 10721, 12533, 17679, 32163, 37599, 41251, 75047, 87731, 123753, 225141, 263193, 889843, 2669529, 6228901, 18686703]

約数ペア:

[(1, 18686703), (3, 6228901), (7, 2669529), (21, 889843), (71, 263193), (83, 225141), (151, 123753), (213, 87731), (249, 75047), (453, 41251), (497, 37599), (581, 32163), (1057, 17679), (1491, 12533), (1743, 10721), (3171, 5893)]