21257407635

素因数分解:

$3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1\times {\mathrm{64921}}^1$

素因数の和:65275

約数の個数: 32

約数和(自身を含む): 34553046528

約数和(自身を除く): 13295638893

約数列:

[1, 3, 5, 15, 83, 249, 263, 415, 789, 1245, 1315, 3945, 21829, 64921, 65487, 109145, 194763, 324605, 327435, 973815, 5388443, 16165329, 17074223, 26942215, 51222669, 80826645, 85371115, 256113345, 1417160509, 4251481527, 7085802545, 21257407635]

約数ペア:

[(1, 21257407635), (3, 7085802545), (5, 4251481527), (15, 1417160509), (83, 256113345), (249, 85371115), (263, 80826645), (415, 51222669), (789, 26942215), (1245, 17074223), (1315, 16165329), (3945, 5388443), (21829, 973815), (64921, 327435), (65487, 324605), (109145, 194763)]