21401625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 42172416

約数和(自身を除く): 20770791

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 75, 93, 105, 125, 155, 175, 217, 263, 375, 465, 525, 651, 775, 789, 875, 1085, 1315, 1841, 2325, 2625, 3255, 3875, 3945, 5425, 5523, 6575, 8153, 9205, 11625, 16275, 19725, 24459, 27125, 27615, 32875, 40765, 46025, 57071, 81375, 98625, 122295, 138075, 171213, 203825, 230125, 285355, 611475, 690375, 856065, 1019125, 1426775, 3057375, 4280325, 7133875, 21401625]

約数ペア:

[(1, 21401625), (3, 7133875), (5, 4280325), (7, 3057375), (15, 1426775), (21, 1019125), (25, 856065), (31, 690375), (35, 611475), (75, 285355), (93, 230125), (105, 203825), (125, 171213), (155, 138075), (175, 122295), (217, 98625), (263, 81375), (375, 57071), (465, 46025), (525, 40765), (651, 32875), (775, 27615), (789, 27125), (875, 24459), (1085, 19725), (1315, 16275), (1841, 11625), (2325, 9205), (2625, 8153), (3255, 6575), (3875, 5523), (3945, 5425)]