1640642745

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{318881}}^1$

素因数の和:318910

約数の個数: 32

約数和(自身を含む): 3061267200

約数和(自身を除く): 1420624455

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 5145, 318881, 956643, 1594405, 2232167, 4783215, 6696501, 11160835, 15625169, 33482505, 46875507, 78125845, 109376183, 234377535, 328128549, 546880915, 1640642745]

約数ペア:

[(1, 1640642745), (3, 546880915), (5, 328128549), (7, 234377535), (15, 109376183), (21, 78125845), (35, 46875507), (49, 33482505), (105, 15625169), (147, 11160835), (245, 6696501), (343, 4783215), (735, 2232167), (1029, 1594405), (1715, 956643), (5145, 318881)]