21888420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{601}}^1\times {\mathrm{607}}^1$

素因数の和:1220

約数の個数: 48

約数和(自身を含む): 61490688

約数和(自身を除く): 39602268

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 601, 607, 1202, 1214, 1803, 1821, 2404, 2428, 3005, 3035, 3606, 3642, 6010, 6070, 7212, 7284, 9015, 9105, 12020, 12140, 18030, 18210, 36060, 36420, 364807, 729614, 1094421, 1459228, 1824035, 2188842, 3648070, 4377684, 5472105, 7296140, 10944210, 21888420]

約数ペア:

[(1, 21888420), (2, 10944210), (3, 7296140), (4, 5472105), (5, 4377684), (6, 3648070), (10, 2188842), (12, 1824035), (15, 1459228), (20, 1094421), (30, 729614), (60, 364807), (601, 36420), (607, 36060), (1202, 18210), (1214, 18030), (1803, 12140), (1821, 12020), (2404, 9105), (2428, 9015), (3005, 7284), (3035, 7212), (3606, 6070), (3642, 6010)]