21604380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51439}}^1$

素因数の和:51458

約数の個数: 48

約数和(自身を含む): 69135360

約数和(自身を除く): 47530980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51439, 102878, 154317, 205756, 257195, 308634, 360073, 514390, 617268, 720146, 771585, 1028780, 1080219, 1440292, 1543170, 1800365, 2160438, 3086340, 3600730, 4320876, 5401095, 7201460, 10802190, 21604380]

約数ペア:

[(1, 21604380), (2, 10802190), (3, 7201460), (4, 5401095), (5, 4320876), (6, 3600730), (7, 3086340), (10, 2160438), (12, 1800365), (14, 1543170), (15, 1440292), (20, 1080219), (21, 1028780), (28, 771585), (30, 720146), (35, 617268), (42, 514390), (60, 360073), (70, 308634), (84, 257195), (105, 205756), (140, 154317), (210, 102878), (420, 51439)]