21286125

素因数分解:

$3^3\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:101

約数の個数: 128

約数和(自身を含む): 48522240

約数和(自身を除く): 27236115

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 27, 35, 45, 51, 53, 63, 75, 85, 105, 119, 125, 135, 153, 159, 175, 189, 225, 255, 265, 315, 357, 371, 375, 425, 459, 477, 525, 595, 675, 765, 795, 875, 901, 945, 1071, 1113, 1125, 1275, 1325, 1431, 1575, 1785, 1855, 2125, 2295, 2385, 2625, 2703, 2975, 3213, 3339, 3375, 3825, 3975, 4505, 4725, 5355, 5565, 6307, 6375, 6625, 7155, 7875, 8109, 8925, 9275, 10017, 11475, 11925, 13515, 14875, 16065, 16695, 18921, 19125, 19875, 22525, 23625, 24327, 26775, 27825, 31535, 35775, 40545, 44625, 46375, 50085, 56763, 57375, 59625, 67575, 80325, 83475, 94605, 112625, 121635, 133875, 139125, 157675, 170289, 178875, 202725, 250425, 283815, 337875, 401625, 417375, 473025, 608175, 788375, 851445, 1013625, 1252125, 1419075, 2365125, 3040875, 4257225, 7095375, 21286125]

約数ペア:

[(1, 21286125), (3, 7095375), (5, 4257225), (7, 3040875), (9, 2365125), (15, 1419075), (17, 1252125), (21, 1013625), (25, 851445), (27, 788375), (35, 608175), (45, 473025), (51, 417375), (53, 401625), (63, 337875), (75, 283815), (85, 250425), (105, 202725), (119, 178875), (125, 170289), (135, 157675), (153, 139125), (159, 133875), (175, 121635), (189, 112625), (225, 94605), (255, 83475), (265, 80325), (315, 67575), (357, 59625), (371, 57375), (375, 56763), (425, 50085), (459, 46375), (477, 44625), (525, 40545), (595, 35775), (675, 31535), (765, 27825), (795, 26775), (875, 24327), (901, 23625), (945, 22525), (1071, 19875), (1113, 19125), (1125, 18921), (1275, 16695), (1325, 16065), (1431, 14875), (1575, 13515), (1785, 11925), (1855, 11475), (2125, 10017), (2295, 9275), (2385, 8925), (2625, 8109), (2703, 7875), (2975, 7155), (3213, 6625), (3339, 6375), (3375, 6307), (3825, 5565), (3975, 5355), (4505, 4725)]