28838425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 45425664

約数和(自身を除く): 16587239

約数列:

[1, 5, 7, 11, 25, 35, 55, 71, 77, 175, 211, 275, 355, 385, 497, 781, 1055, 1477, 1775, 1925, 2321, 2485, 3905, 5275, 5467, 7385, 11605, 12425, 14981, 16247, 19525, 27335, 36925, 58025, 74905, 81235, 104867, 136675, 164791, 374525, 406175, 524335, 823955, 1153537, 2621675, 4119775, 5767685, 28838425]

約数ペア:

[(1, 28838425), (5, 5767685), (7, 4119775), (11, 2621675), (25, 1153537), (35, 823955), (55, 524335), (71, 406175), (77, 374525), (175, 164791), (211, 136675), (275, 104867), (355, 81235), (385, 74905), (497, 58025), (781, 36925), (1055, 27335), (1477, 19525), (1775, 16247), (1925, 14981), (2321, 12425), (2485, 11605), (3905, 7385), (5275, 5467)]