18998955

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 35992320

約数和(自身を除く): 16993365

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 405, 513, 823, 855, 1215, 1539, 2469, 2565, 4115, 4617, 7407, 7695, 12345, 15637, 22221, 23085, 37035, 46911, 66663, 78185, 111105, 140733, 199989, 234555, 333315, 422199, 703665, 999945, 1266597, 2110995, 3799791, 6332985, 18998955]

約数ペア:

[(1, 18998955), (3, 6332985), (5, 3799791), (9, 2110995), (15, 1266597), (19, 999945), (27, 703665), (45, 422199), (57, 333315), (81, 234555), (95, 199989), (135, 140733), (171, 111105), (243, 78185), (285, 66663), (405, 46911), (513, 37035), (823, 23085), (855, 22221), (1215, 15637), (1539, 12345), (2469, 7695), (2565, 7407), (4115, 4617)]