72120880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2237}}^1$

素因数の和:2294

約数の個数: 80

約数和(自身を含む): 186488064

約数和(自身を除く): 114367184

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2237, 2480, 3224, 4030, 4474, 6448, 8060, 8948, 11185, 16120, 17896, 22370, 29081, 32240, 35792, 44740, 58162, 69347, 89480, 116324, 138694, 145405, 178960, 232648, 277388, 290810, 346735, 465296, 554776, 581620, 693470, 901511, 1109552, 1163240, 1386940, 1803022, 2326480, 2773880, 3606044, 4507555, 5547760, 7212088, 9015110, 14424176, 18030220, 36060440, 72120880]

約数ペア:

[(1, 72120880), (2, 36060440), (4, 18030220), (5, 14424176), (8, 9015110), (10, 7212088), (13, 5547760), (16, 4507555), (20, 3606044), (26, 2773880), (31, 2326480), (40, 1803022), (52, 1386940), (62, 1163240), (65, 1109552), (80, 901511), (104, 693470), (124, 581620), (130, 554776), (155, 465296), (208, 346735), (248, 290810), (260, 277388), (310, 232648), (403, 178960), (496, 145405), (520, 138694), (620, 116324), (806, 89480), (1040, 69347), (1240, 58162), (1612, 44740), (2015, 35792), (2237, 32240), (2480, 29081), (3224, 22370), (4030, 17896), (4474, 16120), (6448, 11185), (8060, 8948)]