21013088

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{107}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 46661832

約数和(自身を除く): 25648744

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 68, 76, 107, 136, 152, 214, 272, 304, 323, 361, 428, 544, 608, 646, 722, 856, 1292, 1444, 1712, 1819, 2033, 2584, 2888, 3424, 3638, 4066, 5168, 5776, 6137, 7276, 8132, 10336, 11552, 12274, 14552, 16264, 24548, 29104, 32528, 34561, 38627, 49096, 58208, 65056, 69122, 77254, 98192, 138244, 154508, 196384, 276488, 309016, 552976, 618032, 656659, 1105952, 1236064, 1313318, 2626636, 5253272, 10506544, 21013088]

約数ペア:

[(1, 21013088), (2, 10506544), (4, 5253272), (8, 2626636), (16, 1313318), (17, 1236064), (19, 1105952), (32, 656659), (34, 618032), (38, 552976), (68, 309016), (76, 276488), (107, 196384), (136, 154508), (152, 138244), (214, 98192), (272, 77254), (304, 69122), (323, 65056), (361, 58208), (428, 49096), (544, 38627), (608, 34561), (646, 32528), (722, 29104), (856, 24548), (1292, 16264), (1444, 14552), (1712, 12274), (1819, 11552), (2033, 10336), (2584, 8132), (2888, 7276), (3424, 6137), (3638, 5776), (4066, 5168)]