28707140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2663}}^1$

素因数の和:2697

約数の個数: 72

約数和(自身を含む): 76531392

約数和(自身を除く): 47824252

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2663, 2695, 5326, 5390, 10652, 10780, 13315, 18641, 26630, 29293, 37282, 53260, 58586, 74564, 93205, 117172, 130487, 146465, 186410, 205051, 260974, 292930, 372820, 410102, 521948, 585860, 652435, 820204, 1025255, 1304870, 1435357, 2050510, 2609740, 2870714, 4101020, 5741428, 7176785, 14353570, 28707140]

約数ペア:

[(1, 28707140), (2, 14353570), (4, 7176785), (5, 5741428), (7, 4101020), (10, 2870714), (11, 2609740), (14, 2050510), (20, 1435357), (22, 1304870), (28, 1025255), (35, 820204), (44, 652435), (49, 585860), (55, 521948), (70, 410102), (77, 372820), (98, 292930), (110, 260974), (140, 205051), (154, 186410), (196, 146465), (220, 130487), (245, 117172), (308, 93205), (385, 74564), (490, 58586), (539, 53260), (770, 37282), (980, 29293), (1078, 26630), (1540, 18641), (2156, 13315), (2663, 10780), (2695, 10652), (5326, 5390)]