289437790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1\times {\mathrm{811}}^1$

素因数の和:1308

約数の個数: 32

約数和(自身を含む): 528806880

約数和(自身を除く): 239369090

約数列:

[1, 2, 5, 10, 89, 178, 401, 445, 802, 811, 890, 1622, 2005, 4010, 4055, 8110, 35689, 71378, 72179, 144358, 178445, 325211, 356890, 360895, 650422, 721790, 1626055, 3252110, 28943779, 57887558, 144718895, 289437790]

約数ペア:

[(1, 289437790), (2, 144718895), (5, 57887558), (10, 28943779), (89, 3252110), (178, 1626055), (401, 721790), (445, 650422), (802, 360895), (811, 356890), (890, 325211), (1622, 178445), (2005, 144358), (4010, 72179), (4055, 71378), (8110, 35689)]