21231210

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:149

約数の個数: 192

約数和(自身を含む): 70326144

約数和(自身を除く): 49094934

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 21, 22, 26, 30, 33, 35, 39, 42, 49, 55, 65, 66, 70, 77, 78, 91, 98, 101, 105, 110, 130, 143, 147, 154, 165, 182, 195, 202, 210, 231, 245, 273, 286, 294, 303, 330, 385, 390, 429, 455, 462, 490, 505, 539, 546, 606, 637, 707, 715, 735, 770, 858, 910, 1001, 1010, 1078, 1111, 1155, 1274, 1313, 1365, 1414, 1430, 1470, 1515, 1617, 1911, 2002, 2121, 2145, 2222, 2310, 2626, 2695, 2730, 3003, 3030, 3185, 3234, 3333, 3535, 3822, 3939, 4242, 4290, 4949, 5005, 5390, 5555, 6006, 6370, 6565, 6666, 7007, 7070, 7777, 7878, 8085, 9191, 9555, 9898, 10010, 10605, 11110, 13130, 14014, 14443, 14847, 15015, 15554, 16170, 16665, 18382, 19110, 19695, 21021, 21210, 23331, 24745, 27573, 28886, 29694, 30030, 33330, 35035, 38885, 39390, 42042, 43329, 45955, 46662, 49490, 54439, 55146, 64337, 70070, 72215, 74235, 77770, 86658, 91910, 101101, 105105, 108878, 116655, 128674, 137865, 144430, 148470, 163317, 193011, 202202, 210210, 216645, 233310, 272195, 275730, 303303, 321685, 326634, 386022, 433290, 505505, 544390, 606606, 643370, 707707, 816585, 965055, 1011010, 1415414, 1516515, 1633170, 1930110, 2123121, 3033030, 3538535, 4246242, 7077070, 10615605, 21231210]

約数ペア:

[(1, 21231210), (2, 10615605), (3, 7077070), (5, 4246242), (6, 3538535), (7, 3033030), (10, 2123121), (11, 1930110), (13, 1633170), (14, 1516515), (15, 1415414), (21, 1011010), (22, 965055), (26, 816585), (30, 707707), (33, 643370), (35, 606606), (39, 544390), (42, 505505), (49, 433290), (55, 386022), (65, 326634), (66, 321685), (70, 303303), (77, 275730), (78, 272195), (91, 233310), (98, 216645), (101, 210210), (105, 202202), (110, 193011), (130, 163317), (143, 148470), (147, 144430), (154, 137865), (165, 128674), (182, 116655), (195, 108878), (202, 105105), (210, 101101), (231, 91910), (245, 86658), (273, 77770), (286, 74235), (294, 72215), (303, 70070), (330, 64337), (385, 55146), (390, 54439), (429, 49490), (455, 46662), (462, 45955), (490, 43329), (505, 42042), (539, 39390), (546, 38885), (606, 35035), (637, 33330), (707, 30030), (715, 29694), (735, 28886), (770, 27573), (858, 24745), (910, 23331), (1001, 21210), (1010, 21021), (1078, 19695), (1111, 19110), (1155, 18382), (1274, 16665), (1313, 16170), (1365, 15554), (1414, 15015), (1430, 14847), (1470, 14443), (1515, 14014), (1617, 13130), (1911, 11110), (2002, 10605), (2121, 10010), (2145, 9898), (2222, 9555), (2310, 9191), (2626, 8085), (2695, 7878), (2730, 7777), (3003, 7070), (3030, 7007), (3185, 6666), (3234, 6565), (3333, 6370), (3535, 6006), (3822, 5555), (3939, 5390), (4242, 5005), (4290, 4949)]