21104960

素因数分解:

$2^6\times 5^1\times {\mathrm{101}}^1\times {\mathrm{653}}^1$

素因数の和:771

約数の個数: 56

約数和(自身を含む): 50831496

約数和(自身を除く): 29726536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 160, 202, 320, 404, 505, 653, 808, 1010, 1306, 1616, 2020, 2612, 3232, 3265, 4040, 5224, 6464, 6530, 8080, 10448, 13060, 16160, 20896, 26120, 32320, 41792, 52240, 65953, 104480, 131906, 208960, 263812, 329765, 527624, 659530, 1055248, 1319060, 2110496, 2638120, 4220992, 5276240, 10552480, 21104960]

約数ペア:

[(1, 21104960), (2, 10552480), (4, 5276240), (5, 4220992), (8, 2638120), (10, 2110496), (16, 1319060), (20, 1055248), (32, 659530), (40, 527624), (64, 329765), (80, 263812), (101, 208960), (160, 131906), (202, 104480), (320, 65953), (404, 52240), (505, 41792), (653, 32320), (808, 26120), (1010, 20896), (1306, 16160), (1616, 13060), (2020, 10448), (2612, 8080), (3232, 6530), (3265, 6464), (4040, 5224)]