21658455

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:118

約数の個数: 128

約数和(自身を含む): 49674240

約数和(自身を除く): 28015785

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 41, 43, 45, 63, 65, 91, 105, 117, 123, 129, 135, 189, 195, 205, 215, 273, 287, 301, 315, 351, 369, 387, 455, 533, 559, 585, 615, 645, 819, 861, 903, 945, 1107, 1161, 1365, 1435, 1505, 1599, 1677, 1755, 1763, 1845, 1935, 2457, 2583, 2665, 2709, 2795, 3731, 3913, 4095, 4305, 4515, 4797, 5031, 5289, 5535, 5805, 7749, 7995, 8127, 8385, 8815, 11193, 11739, 12285, 12341, 12915, 13545, 14391, 15093, 15867, 18655, 19565, 22919, 23985, 25155, 26445, 33579, 35217, 37023, 38745, 40635, 47601, 55965, 58695, 61705, 68757, 71955, 75465, 79335, 100737, 105651, 111069, 114595, 160433, 167895, 176085, 185115, 206271, 238005, 333207, 343785, 481299, 503685, 528255, 555345, 618813, 802165, 1031355, 1443897, 1666035, 2406495, 3094065, 4331691, 7219485, 21658455]

約数ペア:

[(1, 21658455), (3, 7219485), (5, 4331691), (7, 3094065), (9, 2406495), (13, 1666035), (15, 1443897), (21, 1031355), (27, 802165), (35, 618813), (39, 555345), (41, 528255), (43, 503685), (45, 481299), (63, 343785), (65, 333207), (91, 238005), (105, 206271), (117, 185115), (123, 176085), (129, 167895), (135, 160433), (189, 114595), (195, 111069), (205, 105651), (215, 100737), (273, 79335), (287, 75465), (301, 71955), (315, 68757), (351, 61705), (369, 58695), (387, 55965), (455, 47601), (533, 40635), (559, 38745), (585, 37023), (615, 35217), (645, 33579), (819, 26445), (861, 25155), (903, 23985), (945, 22919), (1107, 19565), (1161, 18655), (1365, 15867), (1435, 15093), (1505, 14391), (1599, 13545), (1677, 12915), (1755, 12341), (1763, 12285), (1845, 11739), (1935, 11193), (2457, 8815), (2583, 8385), (2665, 8127), (2709, 7995), (2795, 7749), (3731, 5805), (3913, 5535), (4095, 5289), (4305, 5031), (4515, 4797)]