81731880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{9871}}^1$

素因数の和:9911

約数の個数: 96

約数和(自身を含む): 277205760

約数和(自身を除く): 195473880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 60, 69, 72, 90, 92, 115, 120, 138, 180, 184, 207, 230, 276, 345, 360, 414, 460, 552, 690, 828, 920, 1035, 1380, 1656, 2070, 2760, 4140, 8280, 9871, 19742, 29613, 39484, 49355, 59226, 78968, 88839, 98710, 118452, 148065, 177678, 197420, 227033, 236904, 296130, 355356, 394840, 444195, 454066, 592260, 681099, 710712, 888390, 908132, 1135165, 1184520, 1362198, 1776780, 1816264, 2043297, 2270330, 2724396, 3405495, 3553560, 4086594, 4540660, 5448792, 6810990, 8173188, 9081320, 10216485, 13621980, 16346376, 20432970, 27243960, 40865940, 81731880]

約数ペア:

[(1, 81731880), (2, 40865940), (3, 27243960), (4, 20432970), (5, 16346376), (6, 13621980), (8, 10216485), (9, 9081320), (10, 8173188), (12, 6810990), (15, 5448792), (18, 4540660), (20, 4086594), (23, 3553560), (24, 3405495), (30, 2724396), (36, 2270330), (40, 2043297), (45, 1816264), (46, 1776780), (60, 1362198), (69, 1184520), (72, 1135165), (90, 908132), (92, 888390), (115, 710712), (120, 681099), (138, 592260), (180, 454066), (184, 444195), (207, 394840), (230, 355356), (276, 296130), (345, 236904), (360, 227033), (414, 197420), (460, 177678), (552, 148065), (690, 118452), (828, 98710), (920, 88839), (1035, 78968), (1380, 59226), (1656, 49355), (2070, 39484), (2760, 29613), (4140, 19742), (8280, 9871)]