19913984

素因数分解:

$2^8\times {\mathrm{107}}^1\times {\mathrm{727}}^1$

素因数の和:850

約数の個数: 36

約数和(自身を含む): 40176864

約数和(自身を除く): 20262880

約数列:

[1, 2, 4, 8, 16, 32, 64, 107, 128, 214, 256, 428, 727, 856, 1454, 1712, 2908, 3424, 5816, 6848, 11632, 13696, 23264, 27392, 46528, 77789, 93056, 155578, 186112, 311156, 622312, 1244624, 2489248, 4978496, 9956992, 19913984]

約数ペア:

[(1, 19913984), (2, 9956992), (4, 4978496), (8, 2489248), (16, 1244624), (32, 622312), (64, 311156), (107, 186112), (128, 155578), (214, 93056), (256, 77789), (428, 46528), (727, 27392), (856, 23264), (1454, 13696), (1712, 11632), (2908, 6848), (3424, 5816)]