21770775

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{827}}^1$

素因数の和:862

約数の個数: 60

約数和(自身を含む): 43481592

約数和(自身を除く): 21710817

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 135, 195, 225, 325, 351, 405, 585, 675, 827, 975, 1053, 1755, 2025, 2481, 2925, 4135, 5265, 7443, 8775, 10751, 12405, 20675, 22329, 26325, 32253, 37215, 53755, 62025, 66987, 96759, 111645, 161265, 186075, 268775, 290277, 334935, 483795, 558225, 806325, 870831, 1451385, 1674675, 2418975, 4354155, 7256925, 21770775]

約数ペア:

[(1, 21770775), (3, 7256925), (5, 4354155), (9, 2418975), (13, 1674675), (15, 1451385), (25, 870831), (27, 806325), (39, 558225), (45, 483795), (65, 334935), (75, 290277), (81, 268775), (117, 186075), (135, 161265), (195, 111645), (225, 96759), (325, 66987), (351, 62025), (405, 53755), (585, 37215), (675, 32253), (827, 26325), (975, 22329), (1053, 20675), (1755, 12405), (2025, 10751), (2481, 8775), (2925, 7443), (4135, 5265)]