21126735

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1427}}^1$

素因数の和:1492

約数の個数: 48

約数和(自身を含む): 42771456

約数和(自身を除く): 21644721

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 63, 105, 141, 235, 315, 329, 423, 705, 987, 1427, 1645, 2115, 2961, 4281, 4935, 7135, 9989, 12843, 14805, 21405, 29967, 49945, 64215, 67069, 89901, 149835, 201207, 335345, 449505, 469483, 603621, 1006035, 1408449, 2347415, 3018105, 4225347, 7042245, 21126735]

約数ペア:

[(1, 21126735), (3, 7042245), (5, 4225347), (7, 3018105), (9, 2347415), (15, 1408449), (21, 1006035), (35, 603621), (45, 469483), (47, 449505), (63, 335345), (105, 201207), (141, 149835), (235, 89901), (315, 67069), (329, 64215), (423, 49945), (705, 29967), (987, 21405), (1427, 14805), (1645, 12843), (2115, 9989), (2961, 7135), (4281, 4935)]