19704375

素因数分解:

$3^2\times 5^4\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:170

約数の個数: 60

約数和(自身を含む): 37038144

約数和(自身を除く): 17333769

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 113, 125, 155, 225, 279, 339, 375, 465, 565, 625, 775, 1017, 1125, 1395, 1695, 1875, 2325, 2825, 3503, 3875, 5085, 5625, 6975, 8475, 10509, 11625, 14125, 17515, 19375, 25425, 31527, 34875, 42375, 52545, 58125, 70625, 87575, 127125, 157635, 174375, 211875, 262725, 437875, 635625, 788175, 1313625, 2189375, 3940875, 6568125, 19704375]

約数ペア:

[(1, 19704375), (3, 6568125), (5, 3940875), (9, 2189375), (15, 1313625), (25, 788175), (31, 635625), (45, 437875), (75, 262725), (93, 211875), (113, 174375), (125, 157635), (155, 127125), (225, 87575), (279, 70625), (339, 58125), (375, 52545), (465, 42375), (565, 34875), (625, 31527), (775, 25425), (1017, 19375), (1125, 17515), (1395, 14125), (1695, 11625), (1875, 10509), (2325, 8475), (2825, 6975), (3503, 5625), (3875, 5085)]