20291733

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 38413440

約数和(自身を除く): 18121707

約数列:

[1, 3, 7, 9, 11, 21, 33, 47, 49, 63, 77, 89, 99, 141, 147, 231, 267, 329, 423, 441, 517, 539, 623, 693, 801, 979, 987, 1551, 1617, 1869, 2303, 2937, 2961, 3619, 4183, 4361, 4653, 4851, 5607, 6853, 6909, 8811, 10857, 12549, 13083, 20559, 20727, 25333, 29281, 32571, 37647, 39249, 46013, 47971, 61677, 75999, 87843, 138039, 143913, 204967, 227997, 263529, 322091, 414117, 431739, 614901, 966273, 1844703, 2254637, 2898819, 6763911, 20291733]

約数ペア:

[(1, 20291733), (3, 6763911), (7, 2898819), (9, 2254637), (11, 1844703), (21, 966273), (33, 614901), (47, 431739), (49, 414117), (63, 322091), (77, 263529), (89, 227997), (99, 204967), (141, 143913), (147, 138039), (231, 87843), (267, 75999), (329, 61677), (423, 47971), (441, 46013), (517, 39249), (539, 37647), (623, 32571), (693, 29281), (801, 25333), (979, 20727), (987, 20559), (1551, 13083), (1617, 12549), (1869, 10857), (2303, 8811), (2937, 6909), (2961, 6853), (3619, 5607), (4183, 4851), (4361, 4653)]