21909160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{463}}^1$

素因数の和:507

約数の個数: 96

約数和(自身を含む): 61136640

約数和(自身を除く): 39227480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 169, 182, 260, 280, 338, 364, 455, 463, 520, 676, 728, 845, 910, 926, 1183, 1352, 1690, 1820, 1852, 2315, 2366, 3241, 3380, 3640, 3704, 4630, 4732, 5915, 6019, 6482, 6760, 9260, 9464, 11830, 12038, 12964, 16205, 18520, 23660, 24076, 25928, 30095, 32410, 42133, 47320, 48152, 60190, 64820, 78247, 84266, 120380, 129640, 156494, 168532, 210665, 240760, 312988, 337064, 391235, 421330, 547729, 625976, 782470, 842660, 1095458, 1564940, 1685320, 2190916, 2738645, 3129880, 4381832, 5477290, 10954580, 21909160]

約数ペア:

[(1, 21909160), (2, 10954580), (4, 5477290), (5, 4381832), (7, 3129880), (8, 2738645), (10, 2190916), (13, 1685320), (14, 1564940), (20, 1095458), (26, 842660), (28, 782470), (35, 625976), (40, 547729), (52, 421330), (56, 391235), (65, 337064), (70, 312988), (91, 240760), (104, 210665), (130, 168532), (140, 156494), (169, 129640), (182, 120380), (260, 84266), (280, 78247), (338, 64820), (364, 60190), (455, 48152), (463, 47320), (520, 42133), (676, 32410), (728, 30095), (845, 25928), (910, 24076), (926, 23660), (1183, 18520), (1352, 16205), (1690, 12964), (1820, 12038), (1852, 11830), (2315, 9464), (2366, 9260), (3241, 6760), (3380, 6482), (3640, 6019), (3704, 5915), (4630, 4732)]