81810560

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9833}}^1$

素因数の和:9865

約数の個数: 64

約数和(自身を含む): 210644280

約数和(自身を除く): 128833720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 9833, 19666, 39332, 49165, 78664, 98330, 127829, 157328, 196660, 255658, 314656, 393320, 511316, 629312, 639145, 786640, 1022632, 1258624, 1278290, 1573280, 2045264, 2556580, 3146560, 4090528, 5113160, 6293120, 8181056, 10226320, 16362112, 20452640, 40905280, 81810560]

約数ペア:

[(1, 81810560), (2, 40905280), (4, 20452640), (5, 16362112), (8, 10226320), (10, 8181056), (13, 6293120), (16, 5113160), (20, 4090528), (26, 3146560), (32, 2556580), (40, 2045264), (52, 1573280), (64, 1278290), (65, 1258624), (80, 1022632), (104, 786640), (128, 639145), (130, 629312), (160, 511316), (208, 393320), (260, 314656), (320, 255658), (416, 196660), (520, 157328), (640, 127829), (832, 98330), (1040, 78664), (1664, 49165), (2080, 39332), (4160, 19666), (8320, 9833)]