21639228

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 58630656

約数和(自身を除く): 36991428

約数列:

[1, 2, 3, 4, 6, 12, 13, 23, 26, 37, 39, 46, 52, 69, 74, 78, 92, 111, 138, 148, 156, 163, 222, 276, 299, 326, 444, 481, 489, 598, 652, 851, 897, 962, 978, 1196, 1443, 1702, 1794, 1924, 1956, 2119, 2553, 2886, 3404, 3588, 3749, 4238, 5106, 5772, 6031, 6357, 7498, 8476, 10212, 11063, 11247, 12062, 12714, 14996, 18093, 22126, 22494, 24124, 25428, 33189, 36186, 44252, 44988, 48737, 66378, 72372, 78403, 97474, 132756, 138713, 146211, 156806, 194948, 235209, 277426, 292422, 313612, 416139, 470418, 554852, 584844, 832278, 940836, 1664556, 1803269, 3606538, 5409807, 7213076, 10819614, 21639228]

約数ペア:

[(1, 21639228), (2, 10819614), (3, 7213076), (4, 5409807), (6, 3606538), (12, 1803269), (13, 1664556), (23, 940836), (26, 832278), (37, 584844), (39, 554852), (46, 470418), (52, 416139), (69, 313612), (74, 292422), (78, 277426), (92, 235209), (111, 194948), (138, 156806), (148, 146211), (156, 138713), (163, 132756), (222, 97474), (276, 78403), (299, 72372), (326, 66378), (444, 48737), (481, 44988), (489, 44252), (598, 36186), (652, 33189), (851, 25428), (897, 24124), (962, 22494), (978, 22126), (1196, 18093), (1443, 14996), (1702, 12714), (1794, 12062), (1924, 11247), (1956, 11063), (2119, 10212), (2553, 8476), (2886, 7498), (3404, 6357), (3588, 6031), (3749, 5772), (4238, 5106)]