21651772

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^2$

素因数の和:198

約数の個数: 36

約数和(自身を含む): 40402656

約数和(自身を除く): 18750884

約数列:

[1, 2, 4, 41, 47, 53, 82, 94, 106, 164, 188, 212, 1927, 2173, 2491, 2809, 3854, 4346, 4982, 5618, 7708, 8692, 9964, 11236, 102131, 115169, 132023, 204262, 230338, 264046, 408524, 460676, 528092, 5412943, 10825886, 21651772]

約数ペア:

[(1, 21651772), (2, 10825886), (4, 5412943), (41, 528092), (47, 460676), (53, 408524), (82, 264046), (94, 230338), (106, 204262), (164, 132023), (188, 115169), (212, 102131), (1927, 11236), (2173, 9964), (2491, 8692), (2809, 7708), (3854, 5618), (4346, 4982)]