19516275

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{997}}^1$

素因数の和:1045

約数の個数: 48

約数和(自身を含む): 37125600

約数和(自身を除く): 17609325

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 997, 1305, 2175, 2991, 3915, 4985, 6525, 8973, 14955, 19575, 24925, 26919, 28913, 44865, 74775, 86739, 134595, 144565, 224325, 260217, 433695, 672975, 722825, 780651, 1301085, 2168475, 3903255, 6505425, 19516275]

約数ペア:

[(1, 19516275), (3, 6505425), (5, 3903255), (9, 2168475), (15, 1301085), (25, 780651), (27, 722825), (29, 672975), (45, 433695), (75, 260217), (87, 224325), (135, 144565), (145, 134595), (225, 86739), (261, 74775), (435, 44865), (675, 28913), (725, 26919), (783, 24925), (997, 19575), (1305, 14955), (2175, 8973), (2991, 6525), (3915, 4985)]