21091590

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2003}}^1$

素因数の和:2035

約数の個数: 80

約数和(自身を含む): 61105968

約数和(自身を除く): 40014378

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 195, 234, 270, 351, 390, 405, 585, 702, 810, 1053, 1170, 1755, 2003, 2106, 3510, 4006, 5265, 6009, 10015, 10530, 12018, 18027, 20030, 26039, 30045, 36054, 52078, 54081, 60090, 78117, 90135, 108162, 130195, 156234, 162243, 180270, 234351, 260390, 270405, 324486, 390585, 468702, 540810, 703053, 781170, 811215, 1171755, 1406106, 1622430, 2109159, 2343510, 3515265, 4218318, 7030530, 10545795, 21091590]

約数ペア:

[(1, 21091590), (2, 10545795), (3, 7030530), (5, 4218318), (6, 3515265), (9, 2343510), (10, 2109159), (13, 1622430), (15, 1406106), (18, 1171755), (26, 811215), (27, 781170), (30, 703053), (39, 540810), (45, 468702), (54, 390585), (65, 324486), (78, 270405), (81, 260390), (90, 234351), (117, 180270), (130, 162243), (135, 156234), (162, 130195), (195, 108162), (234, 90135), (270, 78117), (351, 60090), (390, 54081), (405, 52078), (585, 36054), (702, 30045), (810, 26039), (1053, 20030), (1170, 18027), (1755, 12018), (2003, 10530), (2106, 10015), (3510, 6009), (4006, 5265)]