20740620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8039}}^1$

素因数の和:8094

約数の個数: 48

約数和(自身を含む): 59431680

約数和(自身を除く): 38691060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8039, 16078, 24117, 32156, 40195, 48234, 80390, 96468, 120585, 160780, 241170, 345677, 482340, 691354, 1037031, 1382708, 1728385, 2074062, 3456770, 4148124, 5185155, 6913540, 10370310, 20740620]

約数ペア:

[(1, 20740620), (2, 10370310), (3, 6913540), (4, 5185155), (5, 4148124), (6, 3456770), (10, 2074062), (12, 1728385), (15, 1382708), (20, 1037031), (30, 691354), (43, 482340), (60, 345677), (86, 241170), (129, 160780), (172, 120585), (215, 96468), (258, 80390), (430, 48234), (516, 40195), (645, 32156), (860, 24117), (1290, 16078), (2580, 8039)]