19681515

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:433

約数の個数: 64

約数和(自身を含む): 40780800

約数和(自身を除く): 21099285

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 59, 63, 105, 135, 177, 189, 295, 315, 353, 413, 531, 885, 945, 1059, 1239, 1593, 1765, 2065, 2471, 2655, 3177, 3717, 5295, 6195, 7413, 7965, 9531, 11151, 12355, 15885, 18585, 20827, 22239, 37065, 47655, 55755, 62481, 66717, 104135, 111195, 145789, 187443, 312405, 333585, 437367, 562329, 728945, 937215, 1312101, 2186835, 2811645, 3936303, 6560505, 19681515]

約数ペア:

[(1, 19681515), (3, 6560505), (5, 3936303), (7, 2811645), (9, 2186835), (15, 1312101), (21, 937215), (27, 728945), (35, 562329), (45, 437367), (59, 333585), (63, 312405), (105, 187443), (135, 145789), (177, 111195), (189, 104135), (295, 66717), (315, 62481), (353, 55755), (413, 47655), (531, 37065), (885, 22239), (945, 20827), (1059, 18585), (1239, 15885), (1593, 12355), (1765, 11151), (2065, 9531), (2471, 7965), (2655, 7413), (3177, 6195), (3717, 5295)]