87381980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{7013}}^1$

素因数の和:7118

約数の個数: 48

約数和(自身を含む): 212103360

約数和(自身を除く): 124721380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1780, 2492, 3115, 6230, 7013, 12460, 14026, 28052, 35065, 49091, 70130, 98182, 140260, 196364, 245455, 490910, 624157, 981820, 1248314, 2496628, 3120785, 4369099, 6241570, 8738198, 12483140, 17476396, 21845495, 43690990, 87381980]

約数ペア:

[(1, 87381980), (2, 43690990), (4, 21845495), (5, 17476396), (7, 12483140), (10, 8738198), (14, 6241570), (20, 4369099), (28, 3120785), (35, 2496628), (70, 1248314), (89, 981820), (140, 624157), (178, 490910), (356, 245455), (445, 196364), (623, 140260), (890, 98182), (1246, 70130), (1780, 49091), (2492, 35065), (3115, 28052), (6230, 14026), (7013, 12460)]