21004218

素因数分解:

$2^1\times 3^3\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 27984582

約数列:

[1, 2, 3, 6, 9, 18, 27, 41, 53, 54, 82, 106, 123, 159, 179, 246, 318, 358, 369, 477, 537, 738, 954, 1074, 1107, 1431, 1611, 2173, 2214, 2862, 3222, 4346, 4833, 6519, 7339, 9487, 9666, 13038, 14678, 18974, 19557, 22017, 28461, 39114, 44034, 56922, 58671, 66051, 85383, 117342, 132102, 170766, 198153, 256149, 388967, 396306, 512298, 777934, 1166901, 2333802, 3500703, 7001406, 10502109, 21004218]

約数ペア:

[(1, 21004218), (2, 10502109), (3, 7001406), (6, 3500703), (9, 2333802), (18, 1166901), (27, 777934), (41, 512298), (53, 396306), (54, 388967), (82, 256149), (106, 198153), (123, 170766), (159, 132102), (179, 117342), (246, 85383), (318, 66051), (358, 58671), (369, 56922), (477, 44034), (537, 39114), (738, 28461), (954, 22017), (1074, 19557), (1107, 18974), (1431, 14678), (1611, 13038), (2173, 9666), (2214, 9487), (2862, 7339), (3222, 6519), (4346, 4833)]