81321760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39097}}^1$

素因数の和:39125

約数の個数: 48

約数和(自身を含む): 206906616

約数和(自身を除く): 125584856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39097, 78194, 156388, 195485, 312776, 390970, 508261, 625552, 781940, 1016522, 1251104, 1563880, 2033044, 2541305, 3127760, 4066088, 5082610, 6255520, 8132176, 10165220, 16264352, 20330440, 40660880, 81321760]

約数ペア:

[(1, 81321760), (2, 40660880), (4, 20330440), (5, 16264352), (8, 10165220), (10, 8132176), (13, 6255520), (16, 5082610), (20, 4066088), (26, 3127760), (32, 2541305), (40, 2033044), (52, 1563880), (65, 1251104), (80, 1016522), (104, 781940), (130, 625552), (160, 508261), (208, 390970), (260, 312776), (416, 195485), (520, 156388), (1040, 78194), (2080, 39097)]