21452807943

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{20887}}^1$

素因数の和:21061

約数の個数: 72

約数和(自身を含む): 38447371872

約数和(自身を除く): 16994563929

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 137, 147, 153, 357, 411, 441, 833, 959, 1071, 1233, 2329, 2499, 2877, 6713, 6987, 7497, 8631, 16303, 20139, 20887, 20961, 48909, 60417, 62661, 114121, 146209, 146727, 187983, 342363, 355079, 438627, 1023463, 1027089, 1065237, 1315881, 2485553, 2861519, 3070389, 3195711, 7456659, 8584557, 9211167, 17398871, 20030633, 22369977, 25753671, 48645823, 52196613, 60091899, 140214431, 145937469, 156589839, 180275697, 340520761, 420643293, 437812407, 1021562283, 1261929879, 2383645327, 3064686849, 7150935981, 21452807943]

約数ペア:

[(1, 21452807943), (3, 7150935981), (7, 3064686849), (9, 2383645327), (17, 1261929879), (21, 1021562283), (49, 437812407), (51, 420643293), (63, 340520761), (119, 180275697), (137, 156589839), (147, 145937469), (153, 140214431), (357, 60091899), (411, 52196613), (441, 48645823), (833, 25753671), (959, 22369977), (1071, 20030633), (1233, 17398871), (2329, 9211167), (2499, 8584557), (2877, 7456659), (6713, 3195711), (6987, 3070389), (7497, 2861519), (8631, 2485553), (16303, 1315881), (20139, 1065237), (20887, 1027089), (20961, 1023463), (48909, 438627), (60417, 355079), (62661, 342363), (114121, 187983), (146209, 146727)]