21232575

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:114

約数の個数: 144

約数和(自身を含む): 50371776

約数和(自身を除く): 29139201

約数列:

[1, 3, 5, 7, 9, 13, 15, 17, 21, 25, 35, 39, 45, 51, 61, 63, 65, 75, 85, 91, 105, 117, 119, 153, 175, 183, 195, 221, 225, 255, 273, 305, 315, 325, 357, 425, 427, 455, 525, 549, 585, 595, 663, 765, 793, 819, 915, 975, 1037, 1071, 1105, 1275, 1281, 1365, 1525, 1547, 1575, 1785, 1989, 2135, 2275, 2379, 2745, 2925, 2975, 3111, 3315, 3825, 3843, 3965, 4095, 4575, 4641, 5185, 5355, 5525, 5551, 6405, 6825, 7137, 7259, 7735, 8925, 9333, 9945, 10675, 11895, 13481, 13725, 13923, 15555, 16575, 16653, 19215, 19825, 20475, 21777, 23205, 25925, 26775, 27755, 32025, 35685, 36295, 38675, 40443, 46665, 49725, 49959, 59475, 65331, 67405, 69615, 77775, 83265, 94367, 96075, 108885, 116025, 121329, 138775, 178425, 181475, 202215, 233325, 249795, 283101, 326655, 337025, 348075, 416325, 471835, 544425, 606645, 849303, 1011075, 1248975, 1415505, 1633275, 2359175, 3033225, 4246515, 7077525, 21232575]

約数ペア:

[(1, 21232575), (3, 7077525), (5, 4246515), (7, 3033225), (9, 2359175), (13, 1633275), (15, 1415505), (17, 1248975), (21, 1011075), (25, 849303), (35, 606645), (39, 544425), (45, 471835), (51, 416325), (61, 348075), (63, 337025), (65, 326655), (75, 283101), (85, 249795), (91, 233325), (105, 202215), (117, 181475), (119, 178425), (153, 138775), (175, 121329), (183, 116025), (195, 108885), (221, 96075), (225, 94367), (255, 83265), (273, 77775), (305, 69615), (315, 67405), (325, 65331), (357, 59475), (425, 49959), (427, 49725), (455, 46665), (525, 40443), (549, 38675), (585, 36295), (595, 35685), (663, 32025), (765, 27755), (793, 26775), (819, 25925), (915, 23205), (975, 21777), (1037, 20475), (1071, 19825), (1105, 19215), (1275, 16653), (1281, 16575), (1365, 15555), (1525, 13923), (1547, 13725), (1575, 13481), (1785, 11895), (1989, 10675), (2135, 9945), (2275, 9333), (2379, 8925), (2745, 7735), (2925, 7259), (2975, 7137), (3111, 6825), (3315, 6405), (3825, 5551), (3843, 5525), (3965, 5355), (4095, 5185), (4575, 4641)]