21116784

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:854

約数の個数: 80

約数和(自身を含む): 60190592

約数和(自身を除く): 39073808

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 43, 48, 52, 78, 86, 104, 129, 156, 172, 208, 258, 312, 344, 516, 559, 624, 688, 787, 1032, 1118, 1574, 1677, 2064, 2236, 2361, 3148, 3354, 4472, 4722, 6296, 6708, 8944, 9444, 10231, 12592, 13416, 18888, 20462, 26832, 30693, 33841, 37776, 40924, 61386, 67682, 81848, 101523, 122772, 135364, 163696, 203046, 245544, 270728, 406092, 439933, 491088, 541456, 812184, 879866, 1319799, 1624368, 1759732, 2639598, 3519464, 5279196, 7038928, 10558392, 21116784]

約数ペア:

[(1, 21116784), (2, 10558392), (3, 7038928), (4, 5279196), (6, 3519464), (8, 2639598), (12, 1759732), (13, 1624368), (16, 1319799), (24, 879866), (26, 812184), (39, 541456), (43, 491088), (48, 439933), (52, 406092), (78, 270728), (86, 245544), (104, 203046), (129, 163696), (156, 135364), (172, 122772), (208, 101523), (258, 81848), (312, 67682), (344, 61386), (516, 40924), (559, 37776), (624, 33841), (688, 30693), (787, 26832), (1032, 20462), (1118, 18888), (1574, 13416), (1677, 12592), (2064, 10231), (2236, 9444), (2361, 8944), (3148, 6708), (3354, 6296), (4472, 4722)]