21000427910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{3413}}^1$

素因数の和:3630

約数の個数: 128

約数和(自身を含む): 48280624128

約数和(自身を除く): 27280196218

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 61, 70, 77, 110, 122, 131, 154, 262, 305, 385, 427, 610, 655, 671, 770, 854, 917, 1310, 1342, 1441, 1834, 2135, 2882, 3355, 3413, 4270, 4585, 4697, 6710, 6826, 7205, 7991, 9170, 9394, 10087, 14410, 15982, 17065, 20174, 23485, 23891, 34130, 37543, 39955, 46970, 47782, 50435, 55937, 75086, 79910, 87901, 100870, 111874, 119455, 175802, 187715, 208193, 238910, 262801, 279685, 375430, 416386, 439505, 447103, 525602, 559370, 615307, 879010, 894206, 1040965, 1230614, 1314005, 1457351, 2081930, 2235515, 2290123, 2628010, 2914702, 3076535, 3129721, 4471030, 4580246, 4918133, 6153070, 6259442, 7286755, 9836266, 11450615, 14573510, 15648605, 16030861, 22901230, 24590665, 27273283, 31297210, 32061722, 34426931, 49181330, 54546566, 68853862, 80154305, 136366415, 160308610, 172134655, 190912981, 272732830, 300006113, 344269310, 381825962, 600012226, 954564905, 1500030565, 1909129810, 2100042791, 3000061130, 4200085582, 10500213955, 21000427910]

約数ペア:

[(1, 21000427910), (2, 10500213955), (5, 4200085582), (7, 3000061130), (10, 2100042791), (11, 1909129810), (14, 1500030565), (22, 954564905), (35, 600012226), (55, 381825962), (61, 344269310), (70, 300006113), (77, 272732830), (110, 190912981), (122, 172134655), (131, 160308610), (154, 136366415), (262, 80154305), (305, 68853862), (385, 54546566), (427, 49181330), (610, 34426931), (655, 32061722), (671, 31297210), (770, 27273283), (854, 24590665), (917, 22901230), (1310, 16030861), (1342, 15648605), (1441, 14573510), (1834, 11450615), (2135, 9836266), (2882, 7286755), (3355, 6259442), (3413, 6153070), (4270, 4918133), (4585, 4580246), (4697, 4471030), (6710, 3129721), (6826, 3076535), (7205, 2914702), (7991, 2628010), (9170, 2290123), (9394, 2235515), (10087, 2081930), (14410, 1457351), (15982, 1314005), (17065, 1230614), (20174, 1040965), (23485, 894206), (23891, 879010), (34130, 615307), (37543, 559370), (39955, 525602), (46970, 447103), (47782, 439505), (50435, 416386), (55937, 375430), (75086, 279685), (79910, 262801), (87901, 238910), (100870, 208193), (111874, 187715), (119455, 175802)]