21514792

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 47234880

約数和(自身を除く): 25720088

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 43, 52, 68, 86, 104, 136, 172, 221, 283, 344, 442, 559, 566, 731, 884, 1118, 1132, 1462, 1768, 2236, 2264, 2924, 3679, 4472, 4811, 5848, 7358, 9503, 9622, 12169, 14716, 19006, 19244, 24338, 29432, 38012, 38488, 48676, 62543, 76024, 97352, 125086, 158197, 206873, 250172, 316394, 413746, 500344, 632788, 827492, 1265576, 1654984, 2689349, 5378698, 10757396, 21514792]

約数ペア:

[(1, 21514792), (2, 10757396), (4, 5378698), (8, 2689349), (13, 1654984), (17, 1265576), (26, 827492), (34, 632788), (43, 500344), (52, 413746), (68, 316394), (86, 250172), (104, 206873), (136, 158197), (172, 125086), (221, 97352), (283, 76024), (344, 62543), (442, 48676), (559, 38488), (566, 38012), (731, 29432), (884, 24338), (1118, 19244), (1132, 19006), (1462, 14716), (1768, 12169), (2236, 9622), (2264, 9503), (2924, 7358), (3679, 5848), (4472, 4811)]