771280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 1857024

約数和(自身を除く): 1085744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 311, 496, 620, 622, 1240, 1244, 1555, 2480, 2488, 3110, 4976, 6220, 9641, 12440, 19282, 24880, 38564, 48205, 77128, 96410, 154256, 192820, 385640, 771280]

約数ペア:

[(1, 771280), (2, 385640), (4, 192820), (5, 154256), (8, 96410), (10, 77128), (16, 48205), (20, 38564), (31, 24880), (40, 19282), (62, 12440), (80, 9641), (124, 6220), (155, 4976), (248, 3110), (310, 2488), (311, 2480), (496, 1555), (620, 1244), (622, 1240)]