1971487540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{439}}^1$

素因数の和:745

約数の個数: 96

約数和(自身を含む): 4590432000

約数和(自身を除く): 2618944460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 149, 220, 274, 298, 439, 548, 596, 685, 745, 878, 1370, 1490, 1507, 1639, 1756, 2195, 2740, 2980, 3014, 3278, 4390, 4829, 6028, 6556, 7535, 8195, 8780, 9658, 15070, 16390, 19316, 20413, 24145, 30140, 32780, 40826, 48290, 60143, 65411, 81652, 96580, 102065, 120286, 130822, 204130, 224543, 240572, 261644, 300715, 327055, 408260, 449086, 601430, 654110, 661573, 719521, 898172, 1122715, 1202860, 1308220, 1323146, 1439042, 2245430, 2646292, 2878084, 3307865, 3597605, 4490860, 6615730, 7195210, 8961307, 13231460, 14390420, 17922614, 35845228, 44806535, 89613070, 98574377, 179226140, 197148754, 394297508, 492871885, 985743770, 1971487540]

約数ペア:

[(1, 1971487540), (2, 985743770), (4, 492871885), (5, 394297508), (10, 197148754), (11, 179226140), (20, 98574377), (22, 89613070), (44, 44806535), (55, 35845228), (110, 17922614), (137, 14390420), (149, 13231460), (220, 8961307), (274, 7195210), (298, 6615730), (439, 4490860), (548, 3597605), (596, 3307865), (685, 2878084), (745, 2646292), (878, 2245430), (1370, 1439042), (1490, 1323146), (1507, 1308220), (1639, 1202860), (1756, 1122715), (2195, 898172), (2740, 719521), (2980, 661573), (3014, 654110), (3278, 601430), (4390, 449086), (4829, 408260), (6028, 327055), (6556, 300715), (7535, 261644), (8195, 240572), (8780, 224543), (9658, 204130), (15070, 130822), (16390, 120286), (19316, 102065), (20413, 96580), (24145, 81652), (30140, 65411), (32780, 60143), (40826, 48290)]