21209808

素因数分解:

$2^4\times 3^1\times {\mathrm{197}}^1\times {\mathrm{2243}}^1$

素因数の和:2451

約数の個数: 40

約数和(自身を含む): 55094688

約数和(自身を除く): 33884880

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 197, 394, 591, 788, 1182, 1576, 2243, 2364, 3152, 4486, 4728, 6729, 8972, 9456, 13458, 17944, 26916, 35888, 53832, 107664, 441871, 883742, 1325613, 1767484, 2651226, 3534968, 5302452, 7069936, 10604904, 21209808]

約数ペア:

[(1, 21209808), (2, 10604904), (3, 7069936), (4, 5302452), (6, 3534968), (8, 2651226), (12, 1767484), (16, 1325613), (24, 883742), (48, 441871), (197, 107664), (394, 53832), (591, 35888), (788, 26916), (1182, 17944), (1576, 13458), (2243, 9456), (2364, 8972), (3152, 6729), (4486, 4728)]