1387240

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 3168000

約数和(自身を除く): 1780760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 439, 632, 790, 878, 1580, 1756, 2195, 3160, 3512, 4390, 8780, 17560, 34681, 69362, 138724, 173405, 277448, 346810, 693620, 1387240]

約数ペア:

[(1, 1387240), (2, 693620), (4, 346810), (5, 277448), (8, 173405), (10, 138724), (20, 69362), (40, 34681), (79, 17560), (158, 8780), (316, 4390), (395, 3512), (439, 3160), (632, 2195), (790, 1756), (878, 1580)]