21005904

素因数分解:

$2^4\times 3^1\times {\mathrm{499}}^1\times {\mathrm{877}}^1$

素因数の和:1387

約数の個数: 40

約数和(自身を含む): 54436000

約数和(自身を除く): 33430096

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 499, 877, 998, 1497, 1754, 1996, 2631, 2994, 3508, 3992, 5262, 5988, 7016, 7984, 10524, 11976, 14032, 21048, 23952, 42096, 437623, 875246, 1312869, 1750492, 2625738, 3500984, 5251476, 7001968, 10502952, 21005904]

約数ペア:

[(1, 21005904), (2, 10502952), (3, 7001968), (4, 5251476), (6, 3500984), (8, 2625738), (12, 1750492), (16, 1312869), (24, 875246), (48, 437623), (499, 42096), (877, 23952), (998, 21048), (1497, 14032), (1754, 11976), (1996, 10524), (2631, 7984), (2994, 7016), (3508, 5988), (3992, 5262)]