21000984039

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{602801}}^1$

素因数の和:602900

約数の個数: 36

約数和(自身を含む): 35734102560

約数和(自身を除く): 14733118521

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 711, 1659, 3871, 4977, 11613, 34839, 602801, 1808403, 4219607, 5425209, 12658821, 29537249, 37976463, 47621279, 88611747, 142863837, 265835241, 333348953, 428591511, 1000046859, 2333442671, 3000140577, 7000328013, 21000984039]

約数ペア:

[(1, 21000984039), (3, 7000328013), (7, 3000140577), (9, 2333442671), (21, 1000046859), (49, 428591511), (63, 333348953), (79, 265835241), (147, 142863837), (237, 88611747), (441, 47621279), (553, 37976463), (711, 29537249), (1659, 12658821), (3871, 5425209), (4977, 4219607), (11613, 1808403), (34839, 602801)]