81921960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{227561}}^1$

素因数の和:227578

約数の個数: 48

約数和(自身を含む): 266247540

約数和(自身を除く): 184325580

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 227561, 455122, 682683, 910244, 1137805, 1365366, 1820488, 2048049, 2275610, 2730732, 3413415, 4096098, 4551220, 5461464, 6826830, 8192196, 9102440, 10240245, 13653660, 16384392, 20480490, 27307320, 40960980, 81921960]

約数ペア:

[(1, 81921960), (2, 40960980), (3, 27307320), (4, 20480490), (5, 16384392), (6, 13653660), (8, 10240245), (9, 9102440), (10, 8192196), (12, 6826830), (15, 5461464), (18, 4551220), (20, 4096098), (24, 3413415), (30, 2730732), (36, 2275610), (40, 2048049), (45, 1820488), (60, 1365366), (72, 1137805), (90, 910244), (120, 682683), (180, 455122), (360, 227561)]