18923805

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{853}}^1$

素因数の和:910

約数の個数: 48

約数和(自身を含む): 35970480

約数和(自身を除く): 17046675

約数列:

[1, 3, 5, 9, 15, 17, 29, 45, 51, 85, 87, 145, 153, 255, 261, 435, 493, 765, 853, 1305, 1479, 2465, 2559, 4265, 4437, 7395, 7677, 12795, 14501, 22185, 24737, 38385, 43503, 72505, 74211, 123685, 130509, 217515, 222633, 371055, 420529, 652545, 1113165, 1261587, 2102645, 3784761, 6307935, 18923805]

約数ペア:

[(1, 18923805), (3, 6307935), (5, 3784761), (9, 2102645), (15, 1261587), (17, 1113165), (29, 652545), (45, 420529), (51, 371055), (85, 222633), (87, 217515), (145, 130509), (153, 123685), (255, 74211), (261, 72505), (435, 43503), (493, 38385), (765, 24737), (853, 22185), (1305, 14501), (1479, 12795), (2465, 7677), (2559, 7395), (4265, 4437)]