161985040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2081}}^1$

素因数の和:2240

約数の個数: 80

約数和(自身を含む): 433722240

約数和(自身を除く): 271737200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 139, 140, 278, 280, 556, 560, 695, 973, 1112, 1390, 1946, 2081, 2224, 2780, 3892, 4162, 4865, 5560, 7784, 8324, 9730, 10405, 11120, 14567, 15568, 16648, 19460, 20810, 29134, 33296, 38920, 41620, 58268, 72835, 77840, 83240, 116536, 145670, 166480, 233072, 289259, 291340, 578518, 582680, 1157036, 1165360, 1446295, 2024813, 2314072, 2892590, 4049626, 4628144, 5785180, 8099252, 10124065, 11570360, 16198504, 20248130, 23140720, 32397008, 40496260, 80992520, 161985040]

約数ペア:

[(1, 161985040), (2, 80992520), (4, 40496260), (5, 32397008), (7, 23140720), (8, 20248130), (10, 16198504), (14, 11570360), (16, 10124065), (20, 8099252), (28, 5785180), (35, 4628144), (40, 4049626), (56, 2892590), (70, 2314072), (80, 2024813), (112, 1446295), (139, 1165360), (140, 1157036), (278, 582680), (280, 578518), (556, 291340), (560, 289259), (695, 233072), (973, 166480), (1112, 145670), (1390, 116536), (1946, 83240), (2081, 77840), (2224, 72835), (2780, 58268), (3892, 41620), (4162, 38920), (4865, 33296), (5560, 29134), (7784, 20810), (8324, 19460), (9730, 16648), (10405, 15568), (11120, 14567)]