28623903

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 23381985

約数列:

[1, 3, 7, 11, 17, 21, 33, 37, 51, 77, 111, 119, 187, 197, 231, 259, 357, 407, 561, 591, 629, 777, 1221, 1309, 1379, 1887, 2167, 2849, 3349, 3927, 4137, 4403, 6501, 6919, 7289, 8547, 10047, 13209, 15169, 20757, 21867, 23443, 36839, 45507, 48433, 51023, 70329, 80179, 110517, 123913, 145299, 153069, 240537, 257873, 371739, 561253, 773619, 867391, 1363043, 1683759, 2602173, 4089129, 9541301, 28623903]

約数ペア:

[(1, 28623903), (3, 9541301), (7, 4089129), (11, 2602173), (17, 1683759), (21, 1363043), (33, 867391), (37, 773619), (51, 561253), (77, 371739), (111, 257873), (119, 240537), (187, 153069), (197, 145299), (231, 123913), (259, 110517), (357, 80179), (407, 70329), (561, 51023), (591, 48433), (629, 45507), (777, 36839), (1221, 23443), (1309, 21867), (1379, 20757), (1887, 15169), (2167, 13209), (2849, 10047), (3349, 8547), (3927, 7289), (4137, 6919), (4403, 6501)]