20199375

素因数分解:

$3^5\times 5^4\times 7^1\times {\mathrm{19}}^1$

素因数の和:61

約数の個数: 120

約数和(自身を含む): 45485440

約数和(自身を除く): 25286065

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 27, 35, 45, 57, 63, 75, 81, 95, 105, 125, 133, 135, 171, 175, 189, 225, 243, 285, 315, 375, 399, 405, 475, 513, 525, 567, 625, 665, 675, 855, 875, 945, 1125, 1197, 1215, 1425, 1539, 1575, 1701, 1875, 1995, 2025, 2375, 2565, 2625, 2835, 3325, 3375, 3591, 4275, 4375, 4617, 4725, 5625, 5985, 6075, 7125, 7695, 7875, 8505, 9975, 10125, 10773, 11875, 12825, 13125, 14175, 16625, 16875, 17955, 21375, 23085, 23625, 29925, 30375, 32319, 35625, 38475, 39375, 42525, 49875, 50625, 53865, 64125, 70875, 83125, 89775, 106875, 115425, 118125, 149625, 151875, 161595, 192375, 212625, 249375, 269325, 320625, 354375, 448875, 577125, 748125, 807975, 961875, 1063125, 1346625, 2244375, 2885625, 4039875, 6733125, 20199375]

約数ペア:

[(1, 20199375), (3, 6733125), (5, 4039875), (7, 2885625), (9, 2244375), (15, 1346625), (19, 1063125), (21, 961875), (25, 807975), (27, 748125), (35, 577125), (45, 448875), (57, 354375), (63, 320625), (75, 269325), (81, 249375), (95, 212625), (105, 192375), (125, 161595), (133, 151875), (135, 149625), (171, 118125), (175, 115425), (189, 106875), (225, 89775), (243, 83125), (285, 70875), (315, 64125), (375, 53865), (399, 50625), (405, 49875), (475, 42525), (513, 39375), (525, 38475), (567, 35625), (625, 32319), (665, 30375), (675, 29925), (855, 23625), (875, 23085), (945, 21375), (1125, 17955), (1197, 16875), (1215, 16625), (1425, 14175), (1539, 13125), (1575, 12825), (1701, 11875), (1875, 10773), (1995, 10125), (2025, 9975), (2375, 8505), (2565, 7875), (2625, 7695), (2835, 7125), (3325, 6075), (3375, 5985), (3591, 5625), (4275, 4725), (4375, 4617)]