20211457875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{126223}}^1$

素因数の和:126309

約数の個数: 64

約数和(自身を含む): 39066832896

約数和(自身を除く): 18855375021

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 61, 75, 105, 125, 175, 183, 305, 375, 427, 525, 875, 915, 1281, 1525, 2135, 2625, 4575, 6405, 7625, 10675, 22875, 32025, 53375, 126223, 160125, 378669, 631115, 883561, 1893345, 2650683, 3155575, 4417805, 7699603, 9466725, 13253415, 15777875, 22089025, 23098809, 38498015, 47333625, 53897221, 66267075, 110445125, 115494045, 161691663, 192490075, 269486105, 331335375, 577470225, 808458315, 962450375, 1347430525, 2887351125, 4042291575, 6737152625, 20211457875]

約数ペア:

[(1, 20211457875), (3, 6737152625), (5, 4042291575), (7, 2887351125), (15, 1347430525), (21, 962450375), (25, 808458315), (35, 577470225), (61, 331335375), (75, 269486105), (105, 192490075), (125, 161691663), (175, 115494045), (183, 110445125), (305, 66267075), (375, 53897221), (427, 47333625), (525, 38498015), (875, 23098809), (915, 22089025), (1281, 15777875), (1525, 13253415), (2135, 9466725), (2625, 7699603), (4575, 4417805), (6405, 3155575), (7625, 2650683), (10675, 1893345), (22875, 883561), (32025, 631115), (53375, 378669), (126223, 160125)]