81868080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{48731}}^1$

素因数の和:48754

約数の個数: 80

約数和(自身を含む): 290052864

約数和(自身を除く): 208184784

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 48731, 97462, 146193, 194924, 243655, 292386, 341117, 389848, 487310, 584772, 682234, 730965, 779696, 974620, 1023351, 1169544, 1364468, 1461930, 1705585, 1949240, 2046702, 2339088, 2728936, 2923860, 3411170, 3898480, 4093404, 5116755, 5457872, 5847720, 6822340, 8186808, 10233510, 11695440, 13644680, 16373616, 20467020, 27289360, 40934040, 81868080]

約数ペア:

[(1, 81868080), (2, 40934040), (3, 27289360), (4, 20467020), (5, 16373616), (6, 13644680), (7, 11695440), (8, 10233510), (10, 8186808), (12, 6822340), (14, 5847720), (15, 5457872), (16, 5116755), (20, 4093404), (21, 3898480), (24, 3411170), (28, 2923860), (30, 2728936), (35, 2339088), (40, 2046702), (42, 1949240), (48, 1705585), (56, 1461930), (60, 1364468), (70, 1169544), (80, 1023351), (84, 974620), (105, 779696), (112, 730965), (120, 682234), (140, 584772), (168, 487310), (210, 389848), (240, 341117), (280, 292386), (336, 243655), (420, 194924), (560, 146193), (840, 97462), (1680, 48731)]