260457505

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 407715840

約数和(自身を除く): 147258335

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 139, 155, 157, 217, 341, 385, 695, 785, 973, 1085, 1099, 1529, 1705, 1727, 2387, 4309, 4865, 4867, 5495, 7645, 8635, 10703, 11935, 12089, 21545, 21823, 24335, 30163, 34069, 47399, 53515, 53537, 60445, 109115, 150815, 152761, 170345, 236995, 240053, 267685, 331793, 374759, 676513, 763805, 1200265, 1658965, 1680371, 1873795, 3382565, 4735591, 7441643, 8401855, 23677955, 37208215, 52091501, 260457505]

約数ペア:

[(1, 260457505), (5, 52091501), (7, 37208215), (11, 23677955), (31, 8401855), (35, 7441643), (55, 4735591), (77, 3382565), (139, 1873795), (155, 1680371), (157, 1658965), (217, 1200265), (341, 763805), (385, 676513), (695, 374759), (785, 331793), (973, 267685), (1085, 240053), (1099, 236995), (1529, 170345), (1705, 152761), (1727, 150815), (2387, 109115), (4309, 60445), (4865, 53537), (4867, 53515), (5495, 47399), (7645, 34069), (8635, 30163), (10703, 24335), (11935, 21823), (12089, 21545)]