21005676

素因数分解:

$2^2\times 3^3\times {\mathrm{17}}^2\times {\mathrm{673}}^1$

素因数の和:720

約数の個数: 72

約数和(自身を含む): 57937040

約数和(自身を除く): 36931364

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 27, 34, 36, 51, 54, 68, 102, 108, 153, 204, 289, 306, 459, 578, 612, 673, 867, 918, 1156, 1346, 1734, 1836, 2019, 2601, 2692, 3468, 4038, 5202, 6057, 7803, 8076, 10404, 11441, 12114, 15606, 18171, 22882, 24228, 31212, 34323, 36342, 45764, 68646, 72684, 102969, 137292, 194497, 205938, 308907, 388994, 411876, 583491, 617814, 777988, 1166982, 1235628, 1750473, 2333964, 3500946, 5251419, 7001892, 10502838, 21005676]

約数ペア:

[(1, 21005676), (2, 10502838), (3, 7001892), (4, 5251419), (6, 3500946), (9, 2333964), (12, 1750473), (17, 1235628), (18, 1166982), (27, 777988), (34, 617814), (36, 583491), (51, 411876), (54, 388994), (68, 308907), (102, 205938), (108, 194497), (153, 137292), (204, 102969), (289, 72684), (306, 68646), (459, 45764), (578, 36342), (612, 34323), (673, 31212), (867, 24228), (918, 22882), (1156, 18171), (1346, 15606), (1734, 12114), (1836, 11441), (2019, 10404), (2601, 8076), (2692, 7803), (3468, 6057), (4038, 5202)]