20488825

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 31497984

約数和(自身を除く): 11009159

約数列:

[1, 5, 7, 17, 25, 35, 71, 85, 97, 119, 175, 355, 425, 485, 497, 595, 679, 1207, 1649, 1775, 2425, 2485, 2975, 3395, 6035, 6887, 8245, 8449, 11543, 12425, 16975, 30175, 34435, 41225, 42245, 48209, 57715, 117079, 172175, 211225, 241045, 288575, 585395, 819553, 1205225, 2926975, 4097765, 20488825]

約数ペア:

[(1, 20488825), (5, 4097765), (7, 2926975), (17, 1205225), (25, 819553), (35, 585395), (71, 288575), (85, 241045), (97, 211225), (119, 172175), (175, 117079), (355, 57715), (425, 48209), (485, 42245), (497, 41225), (595, 34435), (679, 30175), (1207, 16975), (1649, 12425), (1775, 11543), (2425, 8449), (2485, 8245), (2975, 6887), (3395, 6035)]