21418376

素因数分解:

$2^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3943}}^1$

素因数の和:4053

約数の個数: 32

約数和(自身を含む): 46381440

約数和(自身を除く): 24963064

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 97, 194, 388, 679, 776, 1358, 2716, 3943, 5432, 7886, 15772, 27601, 31544, 55202, 110404, 220808, 382471, 764942, 1529884, 2677297, 3059768, 5354594, 10709188, 21418376]

約数ペア:

[(1, 21418376), (2, 10709188), (4, 5354594), (7, 3059768), (8, 2677297), (14, 1529884), (28, 764942), (56, 382471), (97, 220808), (194, 110404), (388, 55202), (679, 31544), (776, 27601), (1358, 15772), (2716, 7886), (3943, 5432)]