21331380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50789}}^1$

素因数の和:50808

約数の個数: 48

約数和(自身を含む): 68261760

約数和(自身を除く): 46930380

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, 50789, 101578, 152367, 203156, 253945, 304734, 355523, 507890, 609468, 711046, 761835, 1015780, 1066569, 1422092, 1523670, 1777615, 2133138, 3047340, 3555230, 4266276, 5332845, 7110460, 10665690, 21331380]

約数ペア:

[(1, 21331380), (2, 10665690), (3, 7110460), (4, 5332845), (5, 4266276), (6, 3555230), (7, 3047340), (10, 2133138), (12, 1777615), (14, 1523670), (15, 1422092), (20, 1066569), (21, 1015780), (28, 761835), (30, 711046), (35, 609468), (42, 507890), (60, 355523), (70, 304734), (84, 253945), (105, 203156), (140, 152367), (210, 101578), (420, 50789)]