639842481

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{383}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 1002792960

約数和(自身を除く): 362950479

約数列:

[1, 3, 9, 17, 51, 61, 153, 179, 183, 383, 537, 549, 1037, 1149, 1611, 3043, 3111, 3447, 6511, 9129, 9333, 10919, 19533, 23363, 27387, 32757, 58599, 68557, 70089, 98271, 185623, 205671, 210267, 397171, 556869, 617013, 1165469, 1191513, 1670607, 3496407, 3574539, 4181977, 10489221, 12545931, 37637793, 71093609, 213280827, 639842481]

約数ペア:

[(1, 639842481), (3, 213280827), (9, 71093609), (17, 37637793), (51, 12545931), (61, 10489221), (153, 4181977), (179, 3574539), (183, 3496407), (383, 1670607), (537, 1191513), (549, 1165469), (1037, 617013), (1149, 556869), (1611, 397171), (3043, 210267), (3111, 205671), (3447, 185623), (6511, 98271), (9129, 70089), (9333, 68557), (10919, 58599), (19533, 32757), (23363, 27387)]