20877430

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:469

約数の個数: 48

約数和(自身を含む): 44175456

約数和(自身を除く): 23298026

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 137, 245, 274, 311, 490, 622, 685, 959, 1370, 1555, 1918, 2177, 3110, 4354, 4795, 6713, 9590, 10885, 13426, 15239, 21770, 30478, 33565, 42607, 67130, 76195, 85214, 152390, 213035, 298249, 426070, 596498, 1491245, 2087743, 2982490, 4175486, 10438715, 20877430]

約数ペア:

[(1, 20877430), (2, 10438715), (5, 4175486), (7, 2982490), (10, 2087743), (14, 1491245), (35, 596498), (49, 426070), (70, 298249), (98, 213035), (137, 152390), (245, 85214), (274, 76195), (311, 67130), (490, 42607), (622, 33565), (685, 30478), (959, 21770), (1370, 15239), (1555, 13426), (1918, 10885), (2177, 9590), (3110, 6713), (4354, 4795)]