81153280

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4877}}^1$

素因数の和:4911

約数の個数: 72

約数和(自身を含む): 209383272

約数和(自身を除く): 128229992

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 4877, 8320, 9754, 16640, 19508, 24385, 39016, 48770, 63401, 78032, 97540, 126802, 156064, 195080, 253604, 312128, 317005, 390160, 507208, 624256, 634010, 780320, 1014416, 1248512, 1268020, 1560640, 2028832, 2536040, 3121280, 4057664, 5072080, 6242560, 8115328, 10144160, 16230656, 20288320, 40576640, 81153280]

約数ペア:

[(1, 81153280), (2, 40576640), (4, 20288320), (5, 16230656), (8, 10144160), (10, 8115328), (13, 6242560), (16, 5072080), (20, 4057664), (26, 3121280), (32, 2536040), (40, 2028832), (52, 1560640), (64, 1268020), (65, 1248512), (80, 1014416), (104, 780320), (128, 634010), (130, 624256), (160, 507208), (208, 390160), (256, 317005), (260, 312128), (320, 253604), (416, 195080), (520, 156064), (640, 126802), (832, 97540), (1040, 78032), (1280, 63401), (1664, 48770), (2080, 39016), (3328, 24385), (4160, 19508), (4877, 16640), (8320, 9754)]