19719585

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 36345600

約数和(自身を除く): 16626015

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 79, 129, 135, 215, 237, 387, 395, 645, 711, 1161, 1185, 1849, 1935, 2133, 3397, 3555, 5547, 5805, 9245, 10191, 10665, 16641, 16985, 27735, 30573, 49923, 50955, 83205, 91719, 146071, 152865, 249615, 438213, 458595, 730355, 1314639, 2191065, 3943917, 6573195, 19719585]

約数ペア:

[(1, 19719585), (3, 6573195), (5, 3943917), (9, 2191065), (15, 1314639), (27, 730355), (43, 458595), (45, 438213), (79, 249615), (129, 152865), (135, 146071), (215, 91719), (237, 83205), (387, 50955), (395, 49923), (645, 30573), (711, 27735), (1161, 16985), (1185, 16641), (1849, 10665), (1935, 10191), (2133, 9245), (3397, 5805), (3555, 5547)]