21580432

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:607

約数の個数: 40

約数和(自身を含む): 43559712

約数和(自身を除く): 21979280

約数列:

[1, 2, 4, 8, 16, 41, 67, 82, 134, 164, 268, 328, 491, 536, 656, 982, 1072, 1964, 2747, 3928, 5494, 7856, 10988, 20131, 21976, 32897, 40262, 43952, 65794, 80524, 131588, 161048, 263176, 322096, 526352, 1348777, 2697554, 5395108, 10790216, 21580432]

約数ペア:

[(1, 21580432), (2, 10790216), (4, 5395108), (8, 2697554), (16, 1348777), (41, 526352), (67, 322096), (82, 263176), (134, 161048), (164, 131588), (268, 80524), (328, 65794), (491, 43952), (536, 40262), (656, 32897), (982, 21976), (1072, 20131), (1964, 10988), (2747, 7856), (3928, 5494)]