890505

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 1931904

約数和(自身を除く): 1041399

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 257, 315, 385, 495, 693, 771, 1155, 1285, 1799, 2313, 2827, 3465, 3855, 5397, 8481, 8995, 11565, 14135, 16191, 19789, 25443, 26985, 42405, 59367, 80955, 98945, 127215, 178101, 296835, 890505]

約数ペア:

[(1, 890505), (3, 296835), (5, 178101), (7, 127215), (9, 98945), (11, 80955), (15, 59367), (21, 42405), (33, 26985), (35, 25443), (45, 19789), (55, 16191), (63, 14135), (77, 11565), (99, 8995), (105, 8481), (165, 5397), (231, 3855), (257, 3465), (315, 2827), (385, 2313), (495, 1799), (693, 1285), (771, 1155)]