21564375

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:114

約数の個数: 80

約数和(自身を含む): 43186176

約数和(自身を除く): 21621801

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 53, 75, 93, 105, 125, 155, 159, 175, 217, 265, 371, 375, 465, 525, 625, 651, 775, 795, 875, 1085, 1113, 1325, 1643, 1855, 1875, 2325, 2625, 3255, 3875, 3975, 4375, 4929, 5425, 5565, 6625, 8215, 9275, 11501, 11625, 13125, 16275, 19375, 19875, 24645, 27125, 27825, 33125, 34503, 41075, 46375, 57505, 58125, 81375, 99375, 123225, 135625, 139125, 172515, 205375, 231875, 287525, 406875, 616125, 695625, 862575, 1026875, 1437625, 3080625, 4312875, 7188125, 21564375]

約数ペア:

[(1, 21564375), (3, 7188125), (5, 4312875), (7, 3080625), (15, 1437625), (21, 1026875), (25, 862575), (31, 695625), (35, 616125), (53, 406875), (75, 287525), (93, 231875), (105, 205375), (125, 172515), (155, 139125), (159, 135625), (175, 123225), (217, 99375), (265, 81375), (371, 58125), (375, 57505), (465, 46375), (525, 41075), (625, 34503), (651, 33125), (775, 27825), (795, 27125), (875, 24645), (1085, 19875), (1113, 19375), (1325, 16275), (1643, 13125), (1855, 11625), (1875, 11501), (2325, 9275), (2625, 8215), (3255, 6625), (3875, 5565), (3975, 5425), (4375, 4929)]