71900199

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{8581}}^1$

素因数の和:8620

約数の個数: 36

約数和(自身を含む): 127185240

約数和(自身を除く): 55285041

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2793, 8379, 8581, 25743, 60067, 77229, 163039, 180201, 420469, 489117, 540603, 1141273, 1261407, 1467351, 3423819, 3784221, 7988911, 10271457, 23966733, 71900199]

約数ペア:

[(1, 71900199), (3, 23966733), (7, 10271457), (9, 7988911), (19, 3784221), (21, 3423819), (49, 1467351), (57, 1261407), (63, 1141273), (133, 540603), (147, 489117), (171, 420469), (399, 180201), (441, 163039), (931, 77229), (1197, 60067), (2793, 25743), (8379, 8581)]