21201420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1151}}^1$

素因数の和:1470

約数の個数: 48

約数和(自身を含む): 59609088

約数和(自身を除く): 38407668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 307, 614, 921, 1151, 1228, 1535, 1842, 2302, 3070, 3453, 3684, 4604, 4605, 5755, 6140, 6906, 9210, 11510, 13812, 17265, 18420, 23020, 34530, 69060, 353357, 706714, 1060071, 1413428, 1766785, 2120142, 3533570, 4240284, 5300355, 7067140, 10600710, 21201420]

約数ペア:

[(1, 21201420), (2, 10600710), (3, 7067140), (4, 5300355), (5, 4240284), (6, 3533570), (10, 2120142), (12, 1766785), (15, 1413428), (20, 1060071), (30, 706714), (60, 353357), (307, 69060), (614, 34530), (921, 23020), (1151, 18420), (1228, 17265), (1535, 13812), (1842, 11510), (2302, 9210), (3070, 6906), (3453, 6140), (3684, 5755), (4604, 4605)]