71220280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43427}}^1$

素因数の和:43479

約数の個数: 32

約数和(自身を含む): 164157840

約数和(自身を除く): 92937560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 43427, 86854, 173708, 217135, 347416, 434270, 868540, 1737080, 1780507, 3561014, 7122028, 8902535, 14244056, 17805070, 35610140, 71220280]

約数ペア:

[(1, 71220280), (2, 35610140), (4, 17805070), (5, 14244056), (8, 8902535), (10, 7122028), (20, 3561014), (40, 1780507), (41, 1737080), (82, 868540), (164, 434270), (205, 347416), (328, 217135), (410, 173708), (820, 86854), (1640, 43427)]