81880785

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{13681}}^1$

素因数の和:13718

約数の個数: 48

約数和(自身を含む): 170751360

約数和(自身を除く): 88870575

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 5985, 13681, 41043, 68405, 95767, 123129, 205215, 259939, 287301, 478835, 615645, 779817, 861903, 1299695, 1436505, 1819573, 2339451, 3899085, 4309515, 5458719, 9097865, 11697255, 16376157, 27293595, 81880785]

約数ペア:

[(1, 81880785), (3, 27293595), (5, 16376157), (7, 11697255), (9, 9097865), (15, 5458719), (19, 4309515), (21, 3899085), (35, 2339451), (45, 1819573), (57, 1436505), (63, 1299695), (95, 861903), (105, 779817), (133, 615645), (171, 478835), (285, 287301), (315, 259939), (399, 205215), (665, 123129), (855, 95767), (1197, 68405), (1995, 41043), (5985, 13681)]