18756765

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1597}}^1$

素因数の和:1643

約数の個数: 40

約数和(自身を含む): 34804440

約数和(自身を除く): 16047675

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1597, 2349, 3915, 4791, 7985, 11745, 14373, 23955, 43119, 46313, 71865, 129357, 138939, 215595, 231565, 416817, 646785, 694695, 1250451, 2084085, 3751353, 6252255, 18756765]

約数ペア:

[(1, 18756765), (3, 6252255), (5, 3751353), (9, 2084085), (15, 1250451), (27, 694695), (29, 646785), (45, 416817), (81, 231565), (87, 215595), (135, 138939), (145, 129357), (261, 71865), (405, 46313), (435, 43119), (783, 23955), (1305, 14373), (1597, 11745), (2349, 7985), (3915, 4791)]