28122913

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 40

約数和(自身を含む): 38116008

約数和(自身を除く): 9993095

約数列:

[1, 7, 13, 17, 49, 53, 91, 119, 221, 343, 371, 637, 689, 833, 901, 1547, 2401, 2597, 4459, 4823, 5831, 6307, 10829, 11713, 18179, 31213, 33761, 40817, 44149, 75803, 81991, 127253, 236327, 309043, 530621, 573937, 1654289, 2163301, 4017559, 28122913]

約数ペア:

[(1, 28122913), (7, 4017559), (13, 2163301), (17, 1654289), (49, 573937), (53, 530621), (91, 309043), (119, 236327), (221, 127253), (343, 81991), (371, 75803), (637, 44149), (689, 40817), (833, 33761), (901, 31213), (1547, 18179), (2401, 11713), (2597, 10829), (4459, 6307), (4823, 5831)]