28045780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1229}}^1$

素因数の和:1408

約数の個数: 48

約数和(自身を含む): 67777920

約数和(自身を除く): 39732140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 1141, 1229, 1630, 2282, 2458, 3260, 4564, 4916, 5705, 6145, 8603, 11410, 12290, 17206, 22820, 24580, 34412, 43015, 86030, 172060, 200327, 400654, 801308, 1001635, 1402289, 2003270, 2804578, 4006540, 5609156, 7011445, 14022890, 28045780]

約数ペア:

[(1, 28045780), (2, 14022890), (4, 7011445), (5, 5609156), (7, 4006540), (10, 2804578), (14, 2003270), (20, 1402289), (28, 1001635), (35, 801308), (70, 400654), (140, 200327), (163, 172060), (326, 86030), (652, 43015), (815, 34412), (1141, 24580), (1229, 22820), (1630, 17206), (2282, 12290), (2458, 11410), (3260, 8603), (4564, 6145), (4916, 5705)]