81405280

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2011}}^1$

素因数の和:2060

約数の個数: 96

約数和(自身を含む): 219034368

約数和(自身を除く): 137629088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 80, 88, 92, 110, 115, 160, 176, 184, 220, 230, 253, 352, 368, 440, 460, 506, 736, 880, 920, 1012, 1265, 1760, 1840, 2011, 2024, 2530, 3680, 4022, 4048, 5060, 8044, 8096, 10055, 10120, 16088, 20110, 20240, 22121, 32176, 40220, 40480, 44242, 46253, 64352, 80440, 88484, 92506, 110605, 160880, 176968, 185012, 221210, 231265, 321760, 353936, 370024, 442420, 462530, 508783, 707872, 740048, 884840, 925060, 1017566, 1480096, 1769680, 1850120, 2035132, 2543915, 3539360, 3700240, 4070264, 5087830, 7400480, 8140528, 10175660, 16281056, 20351320, 40702640, 81405280]

約数ペア:

[(1, 81405280), (2, 40702640), (4, 20351320), (5, 16281056), (8, 10175660), (10, 8140528), (11, 7400480), (16, 5087830), (20, 4070264), (22, 3700240), (23, 3539360), (32, 2543915), (40, 2035132), (44, 1850120), (46, 1769680), (55, 1480096), (80, 1017566), (88, 925060), (92, 884840), (110, 740048), (115, 707872), (160, 508783), (176, 462530), (184, 442420), (220, 370024), (230, 353936), (253, 321760), (352, 231265), (368, 221210), (440, 185012), (460, 176968), (506, 160880), (736, 110605), (880, 92506), (920, 88484), (1012, 80440), (1265, 64352), (1760, 46253), (1840, 44242), (2011, 40480), (2024, 40220), (2530, 32176), (3680, 22121), (4022, 20240), (4048, 20110), (5060, 16088), (8044, 10120), (8096, 10055)]