20121544821

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{391249}}^1$

素因数の和:391369

約数の個数: 32

約数和(自身を含む): 32051200000

約数和(自身を除く): 11929655179

約数列:

[1, 3, 7, 21, 31, 79, 93, 217, 237, 553, 651, 1659, 2449, 7347, 17143, 51429, 391249, 1173747, 2738743, 8216229, 12128719, 30908671, 36386157, 84901033, 92726013, 216360697, 254703099, 649082091, 958168801, 2874506403, 6707181607, 20121544821]

約数ペア:

[(1, 20121544821), (3, 6707181607), (7, 2874506403), (21, 958168801), (31, 649082091), (79, 254703099), (93, 216360697), (217, 92726013), (237, 84901033), (553, 36386157), (651, 30908671), (1659, 12128719), (2449, 8216229), (7347, 2738743), (17143, 1173747), (51429, 391249)]