20708744

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 46694400

約数和(自身を除く): 25985656

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 79, 124, 151, 158, 217, 248, 302, 316, 434, 553, 604, 632, 868, 1057, 1106, 1208, 1736, 2114, 2212, 2449, 4228, 4424, 4681, 4898, 8456, 9362, 9796, 11929, 17143, 18724, 19592, 23858, 32767, 34286, 37448, 47716, 65534, 68572, 83503, 95432, 131068, 137144, 167006, 262136, 334012, 369799, 668024, 739598, 1479196, 2588593, 2958392, 5177186, 10354372, 20708744]

約数ペア:

[(1, 20708744), (2, 10354372), (4, 5177186), (7, 2958392), (8, 2588593), (14, 1479196), (28, 739598), (31, 668024), (56, 369799), (62, 334012), (79, 262136), (124, 167006), (151, 137144), (158, 131068), (217, 95432), (248, 83503), (302, 68572), (316, 65534), (434, 47716), (553, 37448), (604, 34286), (632, 32767), (868, 23858), (1057, 19592), (1106, 18724), (1208, 17143), (1736, 11929), (2114, 9796), (2212, 9362), (2449, 8456), (4228, 4898), (4424, 4681)]