21693880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41719}}^1$

素因数の和:41743

約数の個数: 32

約数和(自身を含む): 52567200

約数和(自身を除く): 30873320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41719, 83438, 166876, 208595, 333752, 417190, 542347, 834380, 1084694, 1668760, 2169388, 2711735, 4338776, 5423470, 10846940, 21693880]

約数ペア:

[(1, 21693880), (2, 10846940), (4, 5423470), (5, 4338776), (8, 2711735), (10, 2169388), (13, 1668760), (20, 1084694), (26, 834380), (40, 542347), (52, 417190), (65, 333752), (104, 208595), (130, 166876), (260, 83438), (520, 41719)]