21223080

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:520

約数の個数: 128

約数和(自身を含む): 72547200

約数和(自身を除く): 51324120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 43, 45, 54, 60, 72, 86, 90, 108, 120, 129, 135, 172, 180, 215, 216, 258, 270, 344, 360, 387, 430, 457, 516, 540, 645, 774, 860, 914, 1032, 1080, 1161, 1290, 1371, 1548, 1720, 1828, 1935, 2285, 2322, 2580, 2742, 3096, 3656, 3870, 4113, 4570, 4644, 5160, 5484, 5805, 6855, 7740, 8226, 9140, 9288, 10968, 11610, 12339, 13710, 15480, 16452, 18280, 19651, 20565, 23220, 24678, 27420, 32904, 39302, 41130, 46440, 49356, 54840, 58953, 61695, 78604, 82260, 98255, 98712, 117906, 123390, 157208, 164520, 176859, 196510, 235812, 246780, 294765, 353718, 393020, 471624, 493560, 530577, 589530, 707436, 786040, 884295, 1061154, 1179060, 1414872, 1768590, 2122308, 2358120, 2652885, 3537180, 4244616, 5305770, 7074360, 10611540, 21223080]

約数ペア:

[(1, 21223080), (2, 10611540), (3, 7074360), (4, 5305770), (5, 4244616), (6, 3537180), (8, 2652885), (9, 2358120), (10, 2122308), (12, 1768590), (15, 1414872), (18, 1179060), (20, 1061154), (24, 884295), (27, 786040), (30, 707436), (36, 589530), (40, 530577), (43, 493560), (45, 471624), (54, 393020), (60, 353718), (72, 294765), (86, 246780), (90, 235812), (108, 196510), (120, 176859), (129, 164520), (135, 157208), (172, 123390), (180, 117906), (215, 98712), (216, 98255), (258, 82260), (270, 78604), (344, 61695), (360, 58953), (387, 54840), (430, 49356), (457, 46440), (516, 41130), (540, 39302), (645, 32904), (774, 27420), (860, 24678), (914, 23220), (1032, 20565), (1080, 19651), (1161, 18280), (1290, 16452), (1371, 15480), (1548, 13710), (1720, 12339), (1828, 11610), (1935, 10968), (2285, 9288), (2322, 9140), (2580, 8226), (2742, 7740), (3096, 6855), (3656, 5805), (3870, 5484), (4113, 5160), (4570, 4644)]