21000913275

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{233}}^1\times {\mathrm{3329}}^1$

素因数の和:3613

約数の個数: 72

約数和(自身を含む): 36813469680

約数和(自身を除く): 15812556405

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 233, 285, 361, 475, 699, 1083, 1165, 1425, 1805, 3329, 3495, 4427, 5415, 5825, 9025, 9987, 13281, 16645, 17475, 22135, 27075, 49935, 63251, 66405, 83225, 84113, 110675, 189753, 249675, 252339, 316255, 332025, 420565, 775657, 948765, 1201769, 1261695, 1581275, 2102825, 2326971, 3605307, 3878285, 4743825, 6008845, 6308475, 11634855, 14737483, 18026535, 19391425, 30044225, 44212449, 58174275, 73687415, 90132675, 221062245, 280012177, 368437075, 840036531, 1105311225, 1400060885, 4200182655, 7000304425, 21000913275]

約数ペア:

[(1, 21000913275), (3, 7000304425), (5, 4200182655), (15, 1400060885), (19, 1105311225), (25, 840036531), (57, 368437075), (75, 280012177), (95, 221062245), (233, 90132675), (285, 73687415), (361, 58174275), (475, 44212449), (699, 30044225), (1083, 19391425), (1165, 18026535), (1425, 14737483), (1805, 11634855), (3329, 6308475), (3495, 6008845), (4427, 4743825), (5415, 3878285), (5825, 3605307), (9025, 2326971), (9987, 2102825), (13281, 1581275), (16645, 1261695), (17475, 1201769), (22135, 948765), (27075, 775657), (49935, 420565), (63251, 332025), (66405, 316255), (83225, 252339), (84113, 249675), (110675, 189753)]