21277256

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2657}}^1$

素因数の和:2694

約数の個数: 64

約数和(自身を含む): 53585280

約数和(自身を除く): 32308024

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2657, 4004, 5314, 8008, 10628, 18599, 21256, 29227, 34541, 37198, 58454, 69082, 74396, 116908, 138164, 148792, 204589, 233816, 241787, 276328, 379951, 409178, 483574, 759902, 818356, 967148, 1519804, 1636712, 1934296, 2659657, 3039608, 5319314, 10638628, 21277256]

約数ペア:

[(1, 21277256), (2, 10638628), (4, 5319314), (7, 3039608), (8, 2659657), (11, 1934296), (13, 1636712), (14, 1519804), (22, 967148), (26, 818356), (28, 759902), (44, 483574), (52, 409178), (56, 379951), (77, 276328), (88, 241787), (91, 233816), (104, 204589), (143, 148792), (154, 138164), (182, 116908), (286, 74396), (308, 69082), (364, 58454), (572, 37198), (616, 34541), (728, 29227), (1001, 21256), (1144, 18599), (2002, 10628), (2657, 8008), (4004, 5314)]