349520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:287

約数の個数: 40

約数和(自身を含む): 863784

約数和(自身を除く): 514264

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 257, 272, 340, 514, 680, 1028, 1285, 1360, 2056, 2570, 4112, 4369, 5140, 8738, 10280, 17476, 20560, 21845, 34952, 43690, 69904, 87380, 174760, 349520]

約数ペア:

[(1, 349520), (2, 174760), (4, 87380), (5, 69904), (8, 43690), (10, 34952), (16, 21845), (17, 20560), (20, 17476), (34, 10280), (40, 8738), (68, 5140), (80, 4369), (85, 4112), (136, 2570), (170, 2056), (257, 1360), (272, 1285), (340, 1028), (514, 680)]