21681824

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 45178560

約数和(自身を除く): 23496736

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 89, 92, 178, 184, 331, 356, 368, 662, 712, 736, 1324, 1424, 2047, 2648, 2848, 4094, 5296, 7613, 8188, 10592, 15226, 16376, 29459, 30452, 32752, 58918, 60904, 65504, 117836, 121808, 235672, 243616, 471344, 677557, 942688, 1355114, 2710228, 5420456, 10840912, 21681824]

約数ペア:

[(1, 21681824), (2, 10840912), (4, 5420456), (8, 2710228), (16, 1355114), (23, 942688), (32, 677557), (46, 471344), (89, 243616), (92, 235672), (178, 121808), (184, 117836), (331, 65504), (356, 60904), (368, 58918), (662, 32752), (712, 30452), (736, 29459), (1324, 16376), (1424, 15226), (2047, 10592), (2648, 8188), (2848, 7613), (4094, 5296)]