21987216

素因数分解:

$2^4\times 3^2\times {\mathrm{107}}^1\times {\mathrm{1427}}^1$

素因数の和:1548

約数の個数: 60

約数和(自身を含む): 62152272

約数和(自身を除く): 40165056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 107, 144, 214, 321, 428, 642, 856, 963, 1284, 1427, 1712, 1926, 2568, 2854, 3852, 4281, 5136, 5708, 7704, 8562, 11416, 12843, 15408, 17124, 22832, 25686, 34248, 51372, 68496, 102744, 152689, 205488, 305378, 458067, 610756, 916134, 1221512, 1374201, 1832268, 2443024, 2748402, 3664536, 5496804, 7329072, 10993608, 21987216]

約数ペア:

[(1, 21987216), (2, 10993608), (3, 7329072), (4, 5496804), (6, 3664536), (8, 2748402), (9, 2443024), (12, 1832268), (16, 1374201), (18, 1221512), (24, 916134), (36, 610756), (48, 458067), (72, 305378), (107, 205488), (144, 152689), (214, 102744), (321, 68496), (428, 51372), (642, 34248), (856, 25686), (963, 22832), (1284, 17124), (1427, 15408), (1712, 12843), (1926, 11416), (2568, 8562), (2854, 7704), (3852, 5708), (4281, 5136)]