640393155

素因数分解:

$3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{34127}}^1$

素因数の和:34280

約数の個数: 32

約数和(自身を含む): 1146700800

約数和(自身を除く): 506307645

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139, 417, 695, 1251, 2085, 3753, 6255, 18765, 34127, 102381, 170635, 307143, 511905, 921429, 1535715, 4607145, 4743653, 14230959, 23718265, 42692877, 71154795, 128078631, 213464385, 640393155]

約数ペア:

[(1, 640393155), (3, 213464385), (5, 128078631), (9, 71154795), (15, 42692877), (27, 23718265), (45, 14230959), (135, 4743653), (139, 4607145), (417, 1535715), (695, 921429), (1251, 511905), (2085, 307143), (3753, 170635), (6255, 102381), (18765, 34127)]