20804220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2819}}^1$

素因数の和:2875

約数の個数: 72

約数和(自身を含む): 64668240

約数和(自身を除く): 43864020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 369, 410, 492, 615, 738, 820, 1230, 1476, 1845, 2460, 2819, 3690, 5638, 7380, 8457, 11276, 14095, 16914, 25371, 28190, 33828, 42285, 50742, 56380, 84570, 101484, 115579, 126855, 169140, 231158, 253710, 346737, 462316, 507420, 577895, 693474, 1040211, 1155790, 1386948, 1733685, 2080422, 2311580, 3467370, 4160844, 5201055, 6934740, 10402110, 20804220]

約数ペア:

[(1, 20804220), (2, 10402110), (3, 6934740), (4, 5201055), (5, 4160844), (6, 3467370), (9, 2311580), (10, 2080422), (12, 1733685), (15, 1386948), (18, 1155790), (20, 1040211), (30, 693474), (36, 577895), (41, 507420), (45, 462316), (60, 346737), (82, 253710), (90, 231158), (123, 169140), (164, 126855), (180, 115579), (205, 101484), (246, 84570), (369, 56380), (410, 50742), (492, 42285), (615, 33828), (738, 28190), (820, 25371), (1230, 16914), (1476, 14095), (1845, 11276), (2460, 8457), (2819, 7380), (3690, 5638)]