21115710

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{277}}^1$

素因数の和:319

約数の個数: 144

約数和(自身を含む): 69215328

約数和(自身を除く): 48099618

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 55, 63, 66, 70, 77, 90, 99, 105, 110, 121, 126, 154, 165, 198, 210, 231, 242, 277, 315, 330, 363, 385, 462, 495, 554, 605, 630, 693, 726, 770, 831, 847, 990, 1089, 1155, 1210, 1385, 1386, 1662, 1694, 1815, 1939, 2178, 2310, 2493, 2541, 2770, 3047, 3465, 3630, 3878, 4155, 4235, 4986, 5082, 5445, 5817, 6094, 6930, 7623, 8310, 8470, 9141, 9695, 10890, 11634, 12465, 12705, 15235, 15246, 17451, 18282, 19390, 21329, 24930, 25410, 27423, 29085, 30470, 33517, 34902, 38115, 42658, 45705, 54846, 58170, 63987, 67034, 76230, 87255, 91410, 100551, 106645, 127974, 137115, 167585, 174510, 191961, 201102, 213290, 234619, 274230, 301653, 319935, 335170, 383922, 469238, 502755, 603306, 639870, 703857, 959805, 1005510, 1173095, 1407714, 1508265, 1919610, 2111571, 2346190, 3016530, 3519285, 4223142, 7038570, 10557855, 21115710]

約数ペア:

[(1, 21115710), (2, 10557855), (3, 7038570), (5, 4223142), (6, 3519285), (7, 3016530), (9, 2346190), (10, 2111571), (11, 1919610), (14, 1508265), (15, 1407714), (18, 1173095), (21, 1005510), (22, 959805), (30, 703857), (33, 639870), (35, 603306), (42, 502755), (45, 469238), (55, 383922), (63, 335170), (66, 319935), (70, 301653), (77, 274230), (90, 234619), (99, 213290), (105, 201102), (110, 191961), (121, 174510), (126, 167585), (154, 137115), (165, 127974), (198, 106645), (210, 100551), (231, 91410), (242, 87255), (277, 76230), (315, 67034), (330, 63987), (363, 58170), (385, 54846), (462, 45705), (495, 42658), (554, 38115), (605, 34902), (630, 33517), (693, 30470), (726, 29085), (770, 27423), (831, 25410), (847, 24930), (990, 21329), (1089, 19390), (1155, 18282), (1210, 17451), (1385, 15246), (1386, 15235), (1662, 12705), (1694, 12465), (1815, 11634), (1939, 10890), (2178, 9695), (2310, 9141), (2493, 8470), (2541, 8310), (2770, 7623), (3047, 6930), (3465, 6094), (3630, 5817), (3878, 5445), (4155, 5082), (4235, 4986)]