81340940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{2377}}^1$

素因数の和:2474

約数の個数: 48

約数和(自身を含む): 179776800

約数和(自身を除く): 98435860

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 59, 116, 118, 145, 236, 290, 295, 580, 590, 1180, 1711, 2377, 3422, 4754, 6844, 8555, 9508, 11885, 17110, 23770, 34220, 47540, 68933, 137866, 140243, 275732, 280486, 344665, 560972, 689330, 701215, 1378660, 1402430, 2804860, 4067047, 8134094, 16268188, 20335235, 40670470, 81340940]

約数ペア:

[(1, 81340940), (2, 40670470), (4, 20335235), (5, 16268188), (10, 8134094), (20, 4067047), (29, 2804860), (58, 1402430), (59, 1378660), (116, 701215), (118, 689330), (145, 560972), (236, 344665), (290, 280486), (295, 275732), (580, 140243), (590, 137866), (1180, 68933), (1711, 47540), (2377, 34220), (3422, 23770), (4754, 17110), (6844, 11885), (8555, 9508)]