81717930

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{43237}}^1$

素因数の和:43260

約数の個数: 64

約数和(自身を含む): 249050880

約数和(自身を除く): 167332950

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 43237, 86474, 129711, 216185, 259422, 302659, 389133, 432370, 605318, 648555, 778266, 907977, 1167399, 1297110, 1513295, 1815954, 1945665, 2334798, 2723931, 3026590, 3891330, 4539885, 5447862, 5836995, 8171793, 9079770, 11673990, 13619655, 16343586, 27239310, 40858965, 81717930]

約数ペア:

[(1, 81717930), (2, 40858965), (3, 27239310), (5, 16343586), (6, 13619655), (7, 11673990), (9, 9079770), (10, 8171793), (14, 5836995), (15, 5447862), (18, 4539885), (21, 3891330), (27, 3026590), (30, 2723931), (35, 2334798), (42, 1945665), (45, 1815954), (54, 1513295), (63, 1297110), (70, 1167399), (90, 907977), (105, 778266), (126, 648555), (135, 605318), (189, 432370), (210, 389133), (270, 302659), (315, 259422), (378, 216185), (630, 129711), (945, 86474), (1890, 43237)]