3899980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 9495360

約数和(自身を除く): 5595380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 313, 356, 445, 623, 626, 890, 1246, 1252, 1565, 1780, 2191, 2492, 3115, 3130, 4382, 6230, 6260, 8764, 10955, 12460, 21910, 27857, 43820, 55714, 111428, 139285, 194999, 278570, 389998, 557140, 779996, 974995, 1949990, 3899980]

約数ペア:

[(1, 3899980), (2, 1949990), (4, 974995), (5, 779996), (7, 557140), (10, 389998), (14, 278570), (20, 194999), (28, 139285), (35, 111428), (70, 55714), (89, 43820), (140, 27857), (178, 21910), (313, 12460), (356, 10955), (445, 8764), (623, 6260), (626, 6230), (890, 4382), (1246, 3130), (1252, 3115), (1565, 2492), (1780, 2191)]