21210280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5827}}^1$

素因数の和:5858

約数の個数: 64

約数和(自身を含む): 58746240

約数和(自身を除く): 37535960

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, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5827, 11654, 23308, 29135, 40789, 46616, 58270, 75751, 81578, 116540, 151502, 163156, 203945, 233080, 303004, 326312, 378755, 407890, 530257, 606008, 757510, 815780, 1060514, 1515020, 1631560, 2121028, 2651285, 3030040, 4242056, 5302570, 10605140, 21210280]

約数ペア:

[(1, 21210280), (2, 10605140), (4, 5302570), (5, 4242056), (7, 3030040), (8, 2651285), (10, 2121028), (13, 1631560), (14, 1515020), (20, 1060514), (26, 815780), (28, 757510), (35, 606008), (40, 530257), (52, 407890), (56, 378755), (65, 326312), (70, 303004), (91, 233080), (104, 203945), (130, 163156), (140, 151502), (182, 116540), (260, 81578), (280, 75751), (364, 58270), (455, 46616), (520, 40789), (728, 29135), (910, 23308), (1820, 11654), (3640, 5827)]