21035488

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 21965792

約数列:

[1, 2, 4, 8, 16, 32, 53, 79, 106, 157, 158, 212, 314, 316, 424, 628, 632, 848, 1256, 1264, 1696, 2512, 2528, 4187, 5024, 8321, 8374, 12403, 16642, 16748, 24806, 33284, 33496, 49612, 66568, 66992, 99224, 133136, 133984, 198448, 266272, 396896, 657359, 1314718, 2629436, 5258872, 10517744, 21035488]

約数ペア:

[(1, 21035488), (2, 10517744), (4, 5258872), (8, 2629436), (16, 1314718), (32, 657359), (53, 396896), (79, 266272), (106, 198448), (157, 133984), (158, 133136), (212, 99224), (314, 66992), (316, 66568), (424, 49612), (628, 33496), (632, 33284), (848, 24806), (1256, 16748), (1264, 16642), (1696, 12403), (2512, 8374), (2528, 8321), (4187, 5024)]