16955720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 23479480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 47, 58, 94, 116, 145, 188, 232, 235, 290, 311, 376, 470, 580, 622, 940, 1160, 1244, 1363, 1555, 1880, 2488, 2726, 3110, 5452, 6220, 6815, 9019, 10904, 12440, 13630, 14617, 18038, 27260, 29234, 36076, 45095, 54520, 58468, 72152, 73085, 90190, 116936, 146170, 180380, 292340, 360760, 423893, 584680, 847786, 1695572, 2119465, 3391144, 4238930, 8477860, 16955720]

約数ペア:

[(1, 16955720), (2, 8477860), (4, 4238930), (5, 3391144), (8, 2119465), (10, 1695572), (20, 847786), (29, 584680), (40, 423893), (47, 360760), (58, 292340), (94, 180380), (116, 146170), (145, 116936), (188, 90190), (232, 73085), (235, 72152), (290, 58468), (311, 54520), (376, 45095), (470, 36076), (580, 29234), (622, 27260), (940, 18038), (1160, 14617), (1244, 13630), (1363, 12440), (1555, 10904), (1880, 9019), (2488, 6815), (2726, 6220), (3110, 5452)]