21378540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{587}}^1\times {\mathrm{607}}^1$

素因数の和:1206

約数の個数: 48

約数和(自身を含む): 60060672

約数和(自身を除く): 38682132

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 587, 607, 1174, 1214, 1761, 1821, 2348, 2428, 2935, 3035, 3522, 3642, 5870, 6070, 7044, 7284, 8805, 9105, 11740, 12140, 17610, 18210, 35220, 36420, 356309, 712618, 1068927, 1425236, 1781545, 2137854, 3563090, 4275708, 5344635, 7126180, 10689270, 21378540]

約数ペア:

[(1, 21378540), (2, 10689270), (3, 7126180), (4, 5344635), (5, 4275708), (6, 3563090), (10, 2137854), (12, 1781545), (15, 1425236), (20, 1068927), (30, 712618), (60, 356309), (587, 36420), (607, 35220), (1174, 18210), (1214, 17610), (1761, 12140), (1821, 11740), (2348, 9105), (2428, 8805), (2935, 7284), (3035, 7044), (3522, 6070), (3642, 5870)]