21480780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2819}}^1$

素因数の和:2958

約数の個数: 48

約数和(自身を含む): 60641280

約数和(自身を除く): 39160500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 127, 254, 381, 508, 635, 762, 1270, 1524, 1905, 2540, 2819, 3810, 5638, 7620, 8457, 11276, 14095, 16914, 28190, 33828, 42285, 56380, 84570, 169140, 358013, 716026, 1074039, 1432052, 1790065, 2148078, 3580130, 4296156, 5370195, 7160260, 10740390, 21480780]

約数ペア:

[(1, 21480780), (2, 10740390), (3, 7160260), (4, 5370195), (5, 4296156), (6, 3580130), (10, 2148078), (12, 1790065), (15, 1432052), (20, 1074039), (30, 716026), (60, 358013), (127, 169140), (254, 84570), (381, 56380), (508, 42285), (635, 33828), (762, 28190), (1270, 16914), (1524, 14095), (1905, 11276), (2540, 8457), (2819, 7620), (3810, 5638)]