27938745

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 50918400

約数和(自身を除く): 22979655

約数列:

[1, 3, 5, 9, 15, 29, 45, 79, 87, 145, 237, 261, 271, 395, 435, 711, 813, 1185, 1305, 1355, 2291, 2439, 3555, 4065, 6873, 7859, 11455, 12195, 20619, 21409, 23577, 34365, 39295, 64227, 70731, 103095, 107045, 117885, 192681, 321135, 353655, 620861, 963405, 1862583, 3104305, 5587749, 9312915, 27938745]

約数ペア:

[(1, 27938745), (3, 9312915), (5, 5587749), (9, 3104305), (15, 1862583), (29, 963405), (45, 620861), (79, 353655), (87, 321135), (145, 192681), (237, 117885), (261, 107045), (271, 103095), (395, 70731), (435, 64227), (711, 39295), (813, 34365), (1185, 23577), (1305, 21409), (1355, 20619), (2291, 12195), (2439, 11455), (3555, 7859), (4065, 6873)]