21357560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{919}}^1$

素因数の和:1020

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 34284040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 83, 140, 166, 280, 332, 415, 581, 664, 830, 919, 1162, 1660, 1838, 2324, 2905, 3320, 3676, 4595, 4648, 5810, 6433, 7352, 9190, 11620, 12866, 18380, 23240, 25732, 32165, 36760, 51464, 64330, 76277, 128660, 152554, 257320, 305108, 381385, 533939, 610216, 762770, 1067878, 1525540, 2135756, 2669695, 3051080, 4271512, 5339390, 10678780, 21357560]

約数ペア:

[(1, 21357560), (2, 10678780), (4, 5339390), (5, 4271512), (7, 3051080), (8, 2669695), (10, 2135756), (14, 1525540), (20, 1067878), (28, 762770), (35, 610216), (40, 533939), (56, 381385), (70, 305108), (83, 257320), (140, 152554), (166, 128660), (280, 76277), (332, 64330), (415, 51464), (581, 36760), (664, 32165), (830, 25732), (919, 23240), (1162, 18380), (1660, 12866), (1838, 11620), (2324, 9190), (2905, 7352), (3320, 6433), (3676, 5810), (4595, 4648)]