21000312

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{7883}}^1$

素因数の和:7932

約数の個数: 48

約数和(自身を含む): 58420440

約数和(自身を除く): 37420128

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 72, 74, 111, 148, 222, 296, 333, 444, 666, 888, 1332, 2664, 7883, 15766, 23649, 31532, 47298, 63064, 70947, 94596, 141894, 189192, 283788, 291671, 567576, 583342, 875013, 1166684, 1750026, 2333368, 2625039, 3500052, 5250078, 7000104, 10500156, 21000312]

約数ペア:

[(1, 21000312), (2, 10500156), (3, 7000104), (4, 5250078), (6, 3500052), (8, 2625039), (9, 2333368), (12, 1750026), (18, 1166684), (24, 875013), (36, 583342), (37, 567576), (72, 291671), (74, 283788), (111, 189192), (148, 141894), (222, 94596), (296, 70947), (333, 63064), (444, 47298), (666, 31532), (888, 23649), (1332, 15766), (2664, 7883)]