21467880

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1217}}^1$

素因数の和:1248

約数の個数: 144

約数和(自身を含む): 81228420

約数和(自身を除く): 59760540

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1217, 1260, 1470, 1764, 1960, 2205, 2434, 2520, 2940, 3528, 3651, 4410, 4868, 5880, 6085, 7302, 8519, 8820, 9736, 10953, 12170, 14604, 17038, 17640, 18255, 21906, 24340, 25557, 29208, 34076, 36510, 42595, 43812, 48680, 51114, 54765, 59633, 68152, 73020, 76671, 85190, 87624, 102228, 109530, 119266, 127785, 146040, 153342, 170380, 178899, 204456, 219060, 238532, 255570, 298165, 306684, 340760, 357798, 383355, 438120, 477064, 511140, 536697, 596330, 613368, 715596, 766710, 894495, 1022280, 1073394, 1192660, 1431192, 1533420, 1788990, 2146788, 2385320, 2683485, 3066840, 3577980, 4293576, 5366970, 7155960, 10733940, 21467880]

約数ペア:

[(1, 21467880), (2, 10733940), (3, 7155960), (4, 5366970), (5, 4293576), (6, 3577980), (7, 3066840), (8, 2683485), (9, 2385320), (10, 2146788), (12, 1788990), (14, 1533420), (15, 1431192), (18, 1192660), (20, 1073394), (21, 1022280), (24, 894495), (28, 766710), (30, 715596), (35, 613368), (36, 596330), (40, 536697), (42, 511140), (45, 477064), (49, 438120), (56, 383355), (60, 357798), (63, 340760), (70, 306684), (72, 298165), (84, 255570), (90, 238532), (98, 219060), (105, 204456), (120, 178899), (126, 170380), (140, 153342), (147, 146040), (168, 127785), (180, 119266), (196, 109530), (210, 102228), (245, 87624), (252, 85190), (280, 76671), (294, 73020), (315, 68152), (360, 59633), (392, 54765), (420, 51114), (441, 48680), (490, 43812), (504, 42595), (588, 36510), (630, 34076), (735, 29208), (840, 25557), (882, 24340), (980, 21906), (1176, 18255), (1217, 17640), (1260, 17038), (1470, 14604), (1764, 12170), (1960, 10953), (2205, 9736), (2434, 8820), (2520, 8519), (2940, 7302), (3528, 6085), (3651, 5880), (4410, 4868)]