1221697490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{21407}}^1$

素因数の和:21866

約数の個数: 32

約数和(自身を含む): 2373719040

約数和(自身を除く): 1152021550

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 439, 878, 2195, 4390, 5707, 11414, 21407, 28535, 42814, 57070, 107035, 214070, 278291, 556582, 1391455, 2782910, 9397673, 18795346, 46988365, 93976730, 122169749, 244339498, 610848745, 1221697490]

約数ペア:

[(1, 1221697490), (2, 610848745), (5, 244339498), (10, 122169749), (13, 93976730), (26, 46988365), (65, 18795346), (130, 9397673), (439, 2782910), (878, 1391455), (2195, 556582), (4390, 278291), (5707, 214070), (11414, 107035), (21407, 57070), (28535, 42814)]