21060

素因数分解:

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

素因数の和:34

約数の個数: 60

約数和(自身を含む): 71148

約数和(自身を除く): 50088

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 260, 270, 324, 351, 390, 405, 468, 540, 585, 702, 780, 810, 1053, 1170, 1404, 1620, 1755, 2106, 2340, 3510, 4212, 5265, 7020, 10530, 21060]

約数ペア:

[(1, 21060), (2, 10530), (3, 7020), (4, 5265), (5, 4212), (6, 3510), (9, 2340), (10, 2106), (12, 1755), (13, 1620), (15, 1404), (18, 1170), (20, 1053), (26, 810), (27, 780), (30, 702), (36, 585), (39, 540), (45, 468), (52, 405), (54, 390), (60, 351), (65, 324), (78, 270), (81, 260), (90, 234), (108, 195), (117, 180), (130, 162), (135, 156)]