18798885

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:392

約数の個数: 80

約数和(自身を含む): 40656000

約数和(自身を除く): 21857115

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 57, 63, 81, 95, 105, 133, 135, 171, 189, 285, 315, 349, 399, 405, 513, 567, 665, 855, 945, 1047, 1197, 1539, 1745, 1995, 2443, 2565, 2835, 3141, 3591, 5235, 5985, 6631, 7329, 7695, 9423, 10773, 12215, 15705, 17955, 19893, 21987, 28269, 33155, 36645, 46417, 47115, 53865, 59679, 65961, 99465, 109935, 139251, 141345, 179037, 197883, 232085, 298395, 329805, 417753, 537111, 696255, 895185, 989415, 1253259, 2088765, 2685555, 3759777, 6266295, 18798885]

約数ペア:

[(1, 18798885), (3, 6266295), (5, 3759777), (7, 2685555), (9, 2088765), (15, 1253259), (19, 989415), (21, 895185), (27, 696255), (35, 537111), (45, 417753), (57, 329805), (63, 298395), (81, 232085), (95, 197883), (105, 179037), (133, 141345), (135, 139251), (171, 109935), (189, 99465), (285, 65961), (315, 59679), (349, 53865), (399, 47115), (405, 46417), (513, 36645), (567, 33155), (665, 28269), (855, 21987), (945, 19893), (1047, 17955), (1197, 15705), (1539, 12215), (1745, 10773), (1995, 9423), (2443, 7695), (2565, 7329), (2835, 6631), (3141, 5985), (3591, 5235)]