81420795

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3527}}^1$

素因数の和:3566

約数の個数: 48

約数和(自身を含む): 154103040

約数和(自身を除く): 72682245

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 405, 513, 855, 1215, 1539, 2565, 3527, 4617, 7695, 10581, 17635, 23085, 31743, 52905, 67013, 95229, 158715, 201039, 285687, 335065, 476145, 603117, 857061, 1005195, 1428435, 1809351, 3015585, 4285305, 5428053, 9046755, 16284159, 27140265, 81420795]

約数ペア:

[(1, 81420795), (3, 27140265), (5, 16284159), (9, 9046755), (15, 5428053), (19, 4285305), (27, 3015585), (45, 1809351), (57, 1428435), (81, 1005195), (95, 857061), (135, 603117), (171, 476145), (243, 335065), (285, 285687), (405, 201039), (513, 158715), (855, 95229), (1215, 67013), (1539, 52905), (2565, 31743), (3527, 23085), (4617, 17635), (7695, 10581)]