19398825

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1039

約数の個数: 48

約数和(自身を含む): 36902400

約数和(自身を除く): 17503575

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 991, 1305, 2175, 2973, 3915, 4955, 6525, 8919, 14865, 19575, 24775, 26757, 28739, 44595, 74325, 86217, 133785, 143695, 222975, 258651, 431085, 668925, 718475, 775953, 1293255, 2155425, 3879765, 6466275, 19398825]

約数ペア:

[(1, 19398825), (3, 6466275), (5, 3879765), (9, 2155425), (15, 1293255), (25, 775953), (27, 718475), (29, 668925), (45, 431085), (75, 258651), (87, 222975), (135, 143695), (145, 133785), (225, 86217), (261, 74325), (435, 44595), (675, 28739), (725, 26757), (783, 24775), (991, 19575), (1305, 14865), (2175, 8919), (2973, 6525), (3915, 4955)]