128439460

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{1223}}^1$

素因数の和:1380

約数の個数: 48

約数和(自身を含む): 277603200

約数和(自身を除く): 149163740

約数列:

[1, 2, 4, 5, 10, 20, 59, 89, 118, 178, 236, 295, 356, 445, 590, 890, 1180, 1223, 1780, 2446, 4892, 5251, 6115, 10502, 12230, 21004, 24460, 26255, 52510, 72157, 105020, 108847, 144314, 217694, 288628, 360785, 435388, 544235, 721570, 1088470, 1443140, 2176940, 6421973, 12843946, 25687892, 32109865, 64219730, 128439460]

約数ペア:

[(1, 128439460), (2, 64219730), (4, 32109865), (5, 25687892), (10, 12843946), (20, 6421973), (59, 2176940), (89, 1443140), (118, 1088470), (178, 721570), (236, 544235), (295, 435388), (356, 360785), (445, 288628), (590, 217694), (890, 144314), (1180, 108847), (1223, 105020), (1780, 72157), (2446, 52510), (4892, 26255), (5251, 24460), (6115, 21004), (10502, 12230)]