21833145

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:132

約数の個数: 80

約数和(自身を含む): 42375168

約数和(自身を除く): 20542023

約数列:

[1, 3, 5, 9, 15, 27, 31, 37, 45, 47, 81, 93, 111, 135, 141, 155, 185, 235, 279, 333, 405, 423, 465, 555, 705, 837, 999, 1147, 1269, 1395, 1457, 1665, 1739, 2115, 2511, 2997, 3441, 3807, 4185, 4371, 4995, 5217, 5735, 6345, 7285, 8695, 10323, 12555, 13113, 14985, 15651, 17205, 19035, 21855, 26085, 30969, 39339, 46953, 51615, 53909, 65565, 78255, 92907, 118017, 140859, 154845, 161727, 196695, 234765, 269545, 464535, 485181, 590085, 704295, 808635, 1455543, 2425905, 4366629, 7277715, 21833145]

約数ペア:

[(1, 21833145), (3, 7277715), (5, 4366629), (9, 2425905), (15, 1455543), (27, 808635), (31, 704295), (37, 590085), (45, 485181), (47, 464535), (81, 269545), (93, 234765), (111, 196695), (135, 161727), (141, 154845), (155, 140859), (185, 118017), (235, 92907), (279, 78255), (333, 65565), (405, 53909), (423, 51615), (465, 46953), (555, 39339), (705, 30969), (837, 26085), (999, 21855), (1147, 19035), (1269, 17205), (1395, 15651), (1457, 14985), (1665, 13113), (1739, 12555), (2115, 10323), (2511, 8695), (2997, 7285), (3441, 6345), (3807, 5735), (4185, 5217), (4371, 4995)]